Rhode Island Technical Reference Manual for Estimating Savings from Energy Efficiency Measures Program Year

Transcription

1 Rhode Island Technical Reference Manual for Estimating Savings from Energy Efficiency s 213 Program Year

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3 Introduction Table of Contents TABLE OF CONTENTS... I LIST OF TABLES... II INTRODUCTION... 1 THE TRM IN THE CONTEXT OF ENERGY EFFICIENCY PROGRAMS... 2 OVERVIEW... 2 PLANNING AND REPORTING... 2 UPDATES TO PROGRAM ADMINISTRATOR TRACKING SYSTEMS... 2 EVOLUTION OF PROGRAM AND MEASURE COST EFFECTIVENESS ANALYSIS TOOLS... 2 EVALUATION, MEASUREMENT AND VERIFICATION... 3 QUALITY CONTROL... 3 TRM UPDATE PROCESS... 4 OVERVIEW... 4 KEY STAKEHOLDERS AND RESPONSIBILITIES... 4 TRM UPDATE CYCLE... 5 MEASURE CHARACTERIZATION STRUCTURE... 6 IMPACT FACTORS FOR CALCULATING ADJUSTED GROSS AND NET SAVINGS... 1 TYPES OF IMPACT FACTORS... 1 STANDARD NET TO GROSS FORMULAS MEASURE CHARACTERIZATIONS RESIDENTIAL NATURAL GAS EFFICIENCY MEASURES... M-1 RESIDENTIAL ELECTRIC EFFICIENCY MEASURES... M-48 C&I NATURAL GAS EFFICIENCY MEASURES... M-16 C&I ELECTRIC EFFICIENCY MEASURES... M-28 APPENDICES APPENDIX A: COMMON LOOKUP TABLES... A-1 APPENDIX B: NET TO GROSS IMPACT FACTORS... B-1 APPENDIX C: NON-ENERGY IMPACTS... C-1 APPENDIX D: TABLE OF REFERENCED DOCUMENTS... D-1 APPENDIX E: ACRONYMS... E-1 APPENDIX F: GLOSSARY... F-1 vember National Grid i

4 Introduction List of Tables Table 1: Savings Factors for EW Shell Insulation... 2 Table 2: Suggested C&I Lighting Hours by Building Type... 4 Table 3: Lighting Power Densities Using the Building Area Method... 4 Table 4: Lighting Power Densities Using the Space-Type Method (Common Spaces)... 5 Table 5: Lighting Power Densities Using the Space-Type Method (by Building Type)... 6 Table 6: Baseline Efficiency Requirements for C&I Unitary Air Conditioners... 8 Table 7: Baseline Efficiency Requirements for C&I Heat Pumps... 8 Table 8: Baseline Efficiency Requirements for C&I Chillers... 9 Table 9: Annual Cooling Hours for C&I Chillers... 9 Table 1: Savings Factors for ECM HVAC Fan Motors... 9 Table 11: Savings Factors for Cooler Night Covers... 9 Table 12: Savings Factors for C&I VSDs ( kwh/hp and kw/hp)... 1 Table 13: Baseline Efficiency Requirements for C&I Gas Boilers Table 14: Baseline Efficiency Requirements for C&I Gas Furnaces vember National Grid ii

5 Introduction Acknowledgements The 213 Program Year version of the Rhode Island Technical Reference Manual ( TRM ) is the second version of this manual. Many individuals have contributed to this effort: Sean Murphy, Jeremy Newberger, Lindsay Perry, and the Cadmus Group. vember National Grid iii

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7 Introduction Introduction This Rhode Island Technical Reference Manual ( TRM ) documents for regulatory agencies, customers, and other stakeholders the methodologies and assumptions used by National Grid to estimate the savings, including reductions in energy and demand consumption and other resource and non-energy impacts, attributable to its electric and gas energy efficiency programs. This reference manual provides methods, formulas and default assumptions for estimating energy, peak demand and other resource and nonenergy impacts from efficiency measures. Within this TRM, efficiency measures are organized by the sector for which the measure is eligible and by the primary energy source associated with the measure. The two sectors are Residential and Commercial & Industrial ( C&I ). The primary energy sources addressed in this TRM are electricity and natural gas. Each measure is presented in its own section as a measure characterization. The measure characterizations provide mathematical equations for determining savings (algorithms), as well as default assumptions and sources, where applicable. In addition, any descriptions of calculation methods or baselines are provided as appropriate. The parameters for calculating savings are listed in the same order for each measure. Algorithms are provided for estimating annual energy and peak demand impacts for primary and secondary energy sources if appropriate. In addition, algorithms or calculated results may be provided for other non-energy impacts (such as water savings or operation and maintenance cost savings). Assumptions are based on Rhode Island data where available. Where Rhode Island-specific data is not available, assumptions may be based on: 1) manufacturer and industry data, 2) a combination of the best available data from jurisdictions in the same region, or 3) engineering judgment to develop credible and realistic factors. The TRM will be reviewed and updated annually to reflect changes in technology, baselines and evaluation results. vember National Grid 1

8 Introduction The TRM in the Context of Energy Efficiency Programs Overview The purpose of this section is to show how the TRM fits into the process of administering energy efficiency programs in Rhode Island. This section explains how the TRM is connected to the following efforts: Planning, Annual reporting, Updates to PA tracking systems, Evolution of program and measure cost effectiveness analysis tools, Evaluation, ment and Verification ( EM&V ), Quality control. Planning and Reporting National Grid is submitting this second version of the RI TRM (the 213 TRM) to the stakeholders along with its Energy Efficiency Program Plan ( EE Program Plan ) for 213. The RI TRM provides regulators and stakeholders with documentation of the assumptions and algorithms that National Grid will use in planning and reporting its energy savings for 213. It can also be used to support qualification in ISO-New England Forward Capacity Market Auctions. However, due to the nature of planning, not all planning assumptions such as those for Commercial and Industrial programs are documented in this TRM. For these areas, the algorithms used to calculate planned savings are presented. Updates to Program Administrator Tracking Systems National Grid maintains a tracking system that contains the energy efficiency data that it uses to meet its annual reporting to the RI PUC. The current design of the tracking system influences the types of assumptions and algorithms that appear in this TRM. The current algorithms leverage inputs that National Grid collects. Evolution of Program and Cost Effectiveness Analysis Tools The program and measure cost effectiveness analysis tools are Microsoft Excel workbooks used by National Grid to ensure that the measures and programs that they implement meet the cost effectiveness requirements defined by the Rhode Island PUC in Dockets 3931 and 422. National Grid also uses the output from the cost effectiveness vember National Grid 2

9 Introduction analysis tools to develop the input (data, tables, and graphs) for its EE Program Plans and Year-End Reports. National Grid envisions aligning the measure names and the categorization of measures in the TRM with the measure names and categorization of measures in the cost effectiveness analysis tools either directly, or through the use of a translation tool. Evaluation, ment and Verification Evaluation, ment and Verification ( EM&V ) ensures that the programs are evaluated, measured, and verified in a way that provides confidence to the public at large that the savings are real and in a way that enables National Grid to report those savings to the EERMC and RI PUC with full confidence. The 214 Rhode Island TRM will be updated with any updates to assumptions and algorithms due to key learning from EM&V results produced from the time when the 213 EE Program Plan and TRM are submitted. A secondary goal of creating a TRM is to identify areas where savings calculations can be improved. The TRM will inform future EM&V planning as a means to make these improvements. For its Rhode Island programs, National Grid may use evaluation results from other jurisdictions. For some of these, Rhode Island contributed sites and/or budgets. For others, the application of results from other jurisdictions is considered based on how similar the programs, delivery, and markets are to those in Rhode Island. Quality Control Regulators and stakeholders can use the TRM to confirm that savings inputs and calculations are reasonable and reliable. However, the TRM cannot be used by regulators and stakeholders to replicate the Company s reported savings. The TRM does not provide regulators and stakeholders with data inputs at a level that is detailed enough to enable replication of the savings reported by PAs. These calculations occur within tracking systems, within separate Excel workbooks, and within cost effectiveness analysis tools. However, in the event that regulators and stakeholders request that PAs provide tracking system details, the reproduction of reported data will be possible using the TRM. vember National Grid 3

10 Introduction TRM Update Process Overview This section describes the process for updating the TRM. The update process is synchronized with the filing of EE Program Plans. Updates to the TRM can include: additions of new measures, updates to existing TRM measures due to: o changes in baseline equipment or practices, affecting measure savings o changes in efficient equipment or practices, affecting measure savings o changes to deemed savings due the revised assumptions for algorithm parameter values (e.g., due to new market research or evaluation studies) o other similar types of changes, updates to impact factors (e.g., due to new impact evaluation studies), discontinuance of existing TRM measures, and updates to the glossary and other background material included in the TRM. Each TRM is associated with a specific program year, which corresponds to the calendar year. The TRM for each program year is updated over time as needed to both plan for future program savings and to report actual savings. Key Stakeholders and Responsibilities Key stakeholders and their responsibilities for the TRM updates are detailed in the following table. Stakeholder National Grid Rhode Island EERMC and Division of Public Utilities and Carriers Jointly Responsibilities Identify and perform needed updates to the TRM Provide TRM to interested stakeholders In 212, the EERMC commissioned the Natural Gas Opportunities Report Review; suggest modifications; and accept TRM Assure coordination with National Grid submissions of program plans and reported savings Administrative coordination of TRM activities, including: o Assure collaboration and consensus regarding TRM updates o Assure updates are compiled and incorporated into the TRM o Coordinate with related program activities (e.g., evaluation and program reporting processes) vember National Grid 4

11 Introduction TRM Update Cycle The description below indicates the main milestones of the TRM update cycle over a period of two years. The identifier program year or PY is used to show that this cycle will be repeated every year. For example, for the 214 Program Year, compilation of updates will begin after the 213 TRM is completed in October 212, and will continue through September 213, for submission in vember 213. September PY-2 to September PY-1: The PY TRM will be updated as needed based on evaluation studies and any other updates. After the PY-1 TRM has been filed, there may be updates to the TRM. The most common updates to the TRM will result from new evaluation studies. Results of evaluation studies will be integrated into the next version of the TRM as the studies are completed. Other updates may include the results of group discussions to adopt latest research or the addition or removal of energy efficiency measures vember (PY-1) prior to program year: The PY TRM is filed with National Grid s PY EE program plan The PY TRM is submitted to the PUC jointly with National Grid s EE program plan. With regard to the program plans, the TRM is considered a planning document in that it provides the documentation for how the PAs plan to count savings for that program year. The TRM is not intended to fully document how the PAs develop their plan estimates for savings. January PY: National Grid begins to track savings based on the PY TRM Beginning in January PY, the PAs will track savings for the PY based on the PY TRM. vember National Grid 5

12 Introduction Characterization Structure This section describes the common entries or inputs that make up each measure characterization. A formatted template follows the descriptions of each section of the measure characterization. Source citations: The source of each assumption or default parameter value should be properly referenced in a footnote. New source citations should be added to Appendix D: Table of Referenced Documents which serves as a cross-reference to digital versions of the referenced documents. Name A single device or behavior may be analyzed as a range of measures depending on a variety of factors which largely translate to where it is and who is using it. Such factors include hours of use, location, and baseline (equipment replaced or behavior modified). For example, the same screw-in compact fluorescent lamp will produce different savings if installed in an emergency room waiting area than if installed in a bedside lamp. Version Date This section will include the date that the measure is effective, which corresponds to the Program Year. Category Overview This section will include a plain text description of the efficient and baseline technology and the benefit(s) of its installation, as well as subfields of supporting information including: Description: Description of the energy efficiency measure, its benefits, and applications. Baseline Efficiency Case: Description of the assumed equipment/operation efficiency in the absence of program intervention. Multiple baselines will be provided as needed, e.g., for different markets. Baselines may refer to reference tables or may be presented as a table for more complex measures) High Efficiency Case: Description of the assumed or calculated equipment/operation efficiency from which the energy and demand savings are determined. The high efficiency case may be based on specific details of the measure installation, minimum requirements for inclusion in the program, or an energy efficiency case based on historical participation. It may refer to tables within the measure characterization or in the appendices or efficiency standards set by organizations such as ENERGY STAR or the Consortium for Energy Efficiency Sector: Indicates whether measure is Residential, Income Eligible or Commercial and Industrial End-Use: Indicates whether measure is Lighting, HVAC, Hot Water, Products, Food Service, Compressed Air, Motors/Drives, Refrigeration, or Behavior vember National Grid 6

13 Introduction Market (Lost Opportunity): Indicates if measure is in a Lost Opportunity Program ( or ) Market (Retrofit): Indicates if measure is in a Retrofit Program ( or ) Electric Energy Impact: Indicates if measure has electric energy impacts ( or ) Gas Energy Impact: Indicates if measure has gas energy impacts ( or ) Oil Energy Impact: Indicates if measure has oil energy impacts ( or ) n-energy Impact: Indicates if measure has non-energy impacts ( or ) Water Impact: Indicates if a measure has water resource impacts ( or ) Savings This section includes various information on the measure savings and how they are determined. Summary Average Gross Savings per Unit by Program: This table summarizes the resource savings (kwh, kw, ) of all efficiency offerings within a measure category via a weighted average of their savings. This is only for illustrating savings and does not correspond to how savings are tracked o Program: This describes the programs in which the measures are offered. Some measures are offered in multiple program Sector and Program name mapping will be as follows: Sector Residential Electric Income Eligible Electric Commercial & Industrial Electric Residential Gas Income Eligible Gas Full Program Name EnergyStar Homes EnergyStar HVAC EnergyWise EnergyWise Multifamily EnergyStar Lighting Home Energy Reports EnergyStar Products Single Family Appliance Management Income Eligible Multifamily Commercial New Construction Commercial Retrofit Direct Install EnergyStar Heating System EnergyWise EnergyWise Multifamily Home Energy Reports Residential New Construction Single Family Appliance Management vember National Grid 7

14 Introduction Commercial & Industrial Gas Income Eligible Multifamily Commercial New Construction Commercial Retrofit Direct Install Commercial & Industrial Multifamily Algorithm Type: This section describes which of four methods of savings calculation applies to a measure o Deemed: The same savings are allocated to every unit of a measure o Engineering Algorithm with Deemed Inputs: savings are calculated with an engineering formula, the inputs of which are constant for all units of a measure. o o Engineering Algorithm with Site Specific Inputs: savings are calculated with an engineering formula, the inputs of which depend on data from the installation site. Custom: Each unit of a measure receives a unique savings calculation that depends on site specific data. Units: This section describes what is installed or affected by an efficiency measure (eg. a boiler or a participant). It defines the quantity counted for savings. Algorithm: This section will describe the method for calculating the primary energy savings in appropriate units, i.e., kwh for electric energy savings or for natural gas energy savings. The savings algorithm will be provided in a form similar to the following Gross kwh = Watts BASE Watts EE Hours 1 Similarly, the method for calculating electric demand savings will be provided in a form similar to the following: Gross kw = Watts BASE Watts EE 1 Below the savings algorithms, a table contains the definitions (and, in some cases, default values) of each input in the equation(s). The inputs for a particular measure may vary and will be reflected as such in this table (see example below). Gross kwh = Gross annual kwh savings from the measure. Gross kw = Gross connected kw savings from the measure. Watts BASE = Connected kw of the baseline unit. Watts EE = Connected kw of the high-efficiency unit. Hours = Average annual hours of use. 1 Conversion: 1 Watts per kw. vember National Grid 8

15 Introduction Hours: The operating hours for equipment that is either on or off, or equivalent full load hours for technologies that operate at partial loads, or reduced hours for controls. Reference tables will be used as needed to avoid repetitive entries. Gross Savings per Unit: This table summarizes the unit resource impacts of each efficiency offering within a measure category (e.g., the savings for boilers of different efficiencies and ratings in the Boiler measure category). The source for each value is referenced. n-energy Impacts: This refers the reader to tables in Appendix C: n-energy Impacts that describe non-energy impacts associated with a given efficiency measure. If the measure has no NEIs, the entry is. Evaluation Approach: This section is for future use. It will describe the evaluation approach applied to calculate the savings in accordance with ISO-New England Forward Capacity Market definitions. Impact Factors for Calculating Adjusted Gross Savings: This section includes a table of impact factor values for adjusting gross savings and calculating lifetime savings. Sources are referenced. Impact factors (free ridership, spillover and/or net-to-gross ratio) for calculating net savings from adjusted gross savings are in Appendix B: Net to Gross Impact Factors. Life: Life includes equipment life and the effects of measure persistence. Equipment life is the number of years that a measure is installed and will operate until failure. persistence takes into account business turnover, early retirement of installed equipment, and other reasons measures might be removed or discontinued. Other impact factors are defined in the next section. vember National Grid 9

16 Introduction Impact Factors for Calculating Adjusted Gross and Net Savings National Grid uses the algorithms in the Characterization sections to calculate the gross savings for energy efficiency measures. Impact factors are then applied to make various adjustments to the gross savings estimate to account for the performance of individual measures or energy efficiency programs as a whole in achieving energy reductions as assessed through evaluation studies. Impacts factors address both the technical performance of energy efficiency measures and programs, accounting for the measured energy and demand reductions realized compared to the gross estimated reductions, as well as the programs effect on the market for energy efficient products and services. This section describes the types of impact factors used to make such adjustments, and how those impacts are applied to gross savings estimates. Definitions of the impact factors and other terms are also provided in the Glossary (see Appendix F: Glossary). Types of Impact Factors The impact factors used to adjust savings fall into one of two categories: Impact factors used to adjust gross savings: In-Service Rate ( ISR ) Savings Persistence Factor ( SPF ) Realization Rate ( RR ) Summer and Winter Peak Demand Coincidence Factors ( CF ). Impact factors used to calculate net savings: Free-Ridership ( FR ) and Spillover ( SO ) Rates Net-to-Gross Ratios ( NTG ). The in-service rate is the actual portion of efficient units that are installed. For example, efficient lamps may have an in-service rate less than 1. since some lamps are purchased as replacement units and are not immediately installed. The ISR is 1. for most measures. The savings persistence factor is the portion of first-year energy or demand savings expected to persist over the life of the energy efficiency measure. The SPF is developed by conducting surveys of installed equipment several years after installation to determine the actual operational capability of the equipment. The SPF is 1. for most measures. In contrast to savings persistence, measure persistence takes into account business turnover, early retirement of installed equipment, and other reasons the installed equipment might be removed or discontinued. persistence is generally vember National Grid 1

17 Introduction incorporated as part of the measure life, and therefore is not included as a separate impact factor. The realization rate is used to adjust the gross savings (as calculated by the savings algorithms) based on impact evaluation studies. The realization rate is equal to the ratio of measure savings developed from an impact evaluation to the estimated measure savings derived from the savings algorithms. The realization rate does not include the effects of any other impact factors. Depending on the impact evaluation study, there may be separate realization rates for energy (kwh), peak demand (kw), or fossil fuel energy (). A coincidence factor adjusts the connected load kw savings derived from the savings algorithm. A coincidence factor represents the fraction of the connected load reduction expected to occur at the same time as a particular system peak period. The coincidence factor includes both coincidence and diversity factors combined into one number, thus there is no need for a separate diversity factor in this TRM. Coincidence factors are provided for the on-peak period as defined by the ISO New England for the Forward Capacity Market ( FCM ), and are calculated consistently with the FCM methodology. Electric demand reduction during the ISO New England peak periods is defined as follows: Summer On-Peak: average demand reduction from 1:-5: PM on non-holiday weekdays in June July, and August Winter On-Peak: average demand reduction from 5:-7: PM on non-holiday weekdays in December and January The values described as Coincidence Factors in the TRM are not always consistent with the strict definition of a Coincidence Factor (CF). It would be more accurate to define the Coincidence Factor as the value that is multiplied by the Gross kw value to calculate the average kw reduction coincident with the on-peak periods. A coincidence factor of 1. may be used because the coincidence is already included in the estimate of Gross kw; this is often the case when the Max kw Reduction is not calculated and instead the Gross kw is estimated using the annual kwh reduction estimate and a loadshape model. A free-rider is a customer who participates in an energy efficiency program (and gets an incentive) but who would have installed some or all of the same measure(s) on their own, with no change in timing of the installation, if the program had not been available. The free-ridership rate is the percentage of savings attributable to participants who would have installed the measures in the absence of program intervention. The spillover rate is the percentage of savings attributable to a measure or program, but additional to the gross (tracked) savings of a program. Spillover includes the effects of 1) participants in the program who install additional energy efficient measures outside of the program as a result of participating in the program, and 2) non-participants who install or influence the installation of energy efficient measures as a result of being aware of the vember National Grid 11

18 Introduction program. These two components are the participant spillover (SO P ) and nonparticipant spillover (SO NP ). The net savings value is the final value of savings that is attributable to a measure or program. Net savings differs from gross savings because it includes the effects of the free-ridership and/or spillover rates. The net-to-gross ratio is the ratio of net savings to the gross savings adjusted by any impact factors (i.e., the adjusted gross savings). Depending on the evaluation study, the NTG ratio may be determined from the free-ridership and spillover rates, if available, or it may be a distinct value with no separate specification of FR and SO values. vember National Grid 12

19 Introduction Standard Net to Gross Formulas The TRM measure entries provide algorithms or methodologies for calculating the gross energy and demand savings for each category of efficiency measures. The following standard formulas show how the impact factors are applied to calculate the net savings. These are the calculations used by National Grid to track and report gross and net savings for its energy efficiency programs in Rhode Island. Calculation of Net Annual Electric Energy Savings net_kwh = gross_kwh SPF ISR x RR E NTG Calculation of Net Summer Electric Peak Demand Coincident kw Savings net_kw SP = gross_kw SPF ISR RR SP CF SP NTG Calculation of Net Winter Electric Peak Demand Coincident kw Savings net_kw WP = gross_kw SPF ISR RR WP CF WP NTG Calculation of Net Annual Natural Gas Energy Savings net_ = gross_ SPF ISR RR E NTG Where: gross_kwh = Gross Annual kwh Savings net_kwh = Net Annual kwh Savings gross_kw SP = Gross Connected kw Savings (summer peak) gross_kw WP = Gross Connected kw Savings (winter peak) net_kw SP = Adjusted Gross Connected kw Savings (winter peak) net_kw WP = Net Coincident kw Savings (winter peak) gross_ = Gross Annual Savings net_ = Net Annual Savings SPF = Savings Persistence Factor ISR = In-Service Rate CF SP = Peak Coincidence Factor (summer peak) CF WP = Peak Coincidence Factor (winter peak) RR E = Realization Rate for electric energy (kwh) RR SP = Realization Rate for summer peak kw RR WP = Realization Rate for winter peak kw NTG = Net-to-Gross Ratio FR = Free-Ridership Factor SO P = Participant Spillover Factor SO NP = n-participant Spillover Factor Depending on the evaluation study methodology: NTG is equal to (1 FR + SO P + SO NP ), or NTG is a single value with no distinction of FR, SO P, SO NP, and/or other factors that cannot be reliably isolated. vember National Grid 13

20 Characterizations Characterizations vember National Grid

21 Table of Contents Residential Gas Efficiency s M-1 Behavior - Home Energy Reports M-1 Hot Water - DHW s M-3 Hot Water - Water Heating System Replacement M-5 Hot Water - Water Heaters M-7 Hot Water - Low-Flow Showerheads M-1 Hot Water - EW DHW s M-12 Hot Water - Faucet Aerators M-14 HVAC - Codes M-16 HVAC - Boiler Controls M-18 HVAC - Boilers, Early Replacement M-2 HVAC - Deep Energy Retrofit M-23 HVAC - Demand Circulators M-25 HVAC - EW Air Sealing M-27 HVAC - EW Other Insulation M-3 HVAC - EW Shell Insulation M-33 HVAC - Heat Recovery Ventilators M-35 HVAC - Heating M-37 HVAC - Heating System Replacement M-39 HVAC - Integrated Boiler/Water Heater M-41 HVAC - Programmable Thermostats M-43 HVAC - Weatherization M-46 HVAC - Boilers M-48 HVAC - Furnaces M-5 Residential Electric Efficiency s M-52 Behavior - Home Energy Reports M-52 Behavior - Basic Educational s M-54 Behavior - Audits M-56 Hot Water - Faucet Aerators M-58 Hot Water - DHW s M-6 October 212 (c) 212 National Grid

22 Table of Contents Hot Water - EW DHW s M-62 Hot Water - Waterbed Replacement M-64 Hot Water - Low-Flow Showerheads M-66 Hot Water - Clothes Washers M-68 Hot Water - Heat Pump Water Heaters M-7 HVAC - Heat Pump Quality Installation Verification (QIV) M-72 HVAC - EW Shell Insulation M-74 HVAC - Heat Pump Digital Check-up/Tune-up M-76 HVAC - Heating System (Rebate) M-78 HVAC - Furnace Fan Motors M-8 HVAC - Heating System Replacement M-83 HVAC - EW Other Insulation M-85 HVAC - Ductless MiniSplits M-87 HVAC - Duct Sealing M-89 HVAC - Down Size ½ Ton M-91 HVAC - Codes M-93 HVAC - Central AC Quality Installation Verification (QIV) M-95 HVAC - Central AC Digital Check-up/Tune up M-97 HVAC - Air Source Heat Pump Systems M-99 HVAC - Demand Circulators M-11 HVAC - Central AC M-13 HVAC - Deep Energy Retrofit M-15 HVAC - TXV Valve Replacement of Fixed Orifice M-18 HVAC - EW Air Sealing M-11 HVAC - ESH Heating, Cooling, and DHW s M-112 HVAC - ECM Circulator Pumps M-114 HVAC - Early Replacement of Central AC or Heat Pump Unit M-116 HVAC - Window AC (Retrofit) M-118 HVAC - Weatherization M-12 HVAC - Room AC M-123 October 212 (c) 212 National Grid

23 Table of Contents HVAC - Right Sizing M-125 HVAC - Quality Installation with Duct Modification M-127 HVAC - Programmable Thermostats M-129 Lighting - Outdoor Fixtures M-132 Lighting - Indoor Fixtures M-134 Lighting - CFL Bulbs M-137 Lighting - MultiFamily Lighting M-14 Lighting - Torchieres M-142 Lighting - LED Lighting M-144 Products - Pool Pumps M-147 Products - Televisions M-149 Products - Refrigerators M-152 Products - Refrigerator Replacement M-154 Products - Room Air Cleaners M-156 Products - Computers M-158 Products - Freezers M-16 Products - Smart Strips M-162 Products - Computer Monitors M-164 Products - Refrigerator/Freezer Removal M-166 Products - Freezer Replacement M-168 Commercial Gas Efficiency s M-17 Food Service - Commercial Steamer M-17 Food Service - Commercial Fryer M-172 Food Service - Commercial Griddle M-174 Food Service - Commercial Gas-Fired Ovens M-176 Hot Water - Water Heaters M-178 Hot Water - Faucet Aerators M-181 Hot Water - Low-Flow Showerheads M-183 Hot Water - Pre-Rinse Spray Valves M-185 Hot Water - Steam Traps M-187 October 212 (c) 212 National Grid

24 Table of Contents HVAC - Codes M-189 HVAC - Building Operator Certification M-191 HVAC - EW Air Sealing M-193 HVAC - Boiler Controls M-195 HVAC - Condensing Unit Heater M-197 HVAC - Boilers M-199 HVAC - EW Other Insulation M-22 HVAC - EW Shell Insulation M-24 HVAC - Furnaces M-26 HVAC - Heating System Replacement M-28 HVAC - Infrared Heater M-21 HVAC - Integrated Boiler/Water Heater M-212 HVAC - Programmable Thermostats M-214 HVAC - Demand Circulators M-216 Multiple - Custom s M-218 Commercial Electric Efficiency s M-22 Compressed Air - Low Pressure Drop Filters M-22 Compressed Air - Refrigerated Air Dryers M-222 Compressed Air - Zero Loss Condensate Drains M-224 Compressed Air - High Efficiency Air Compressors M-226 Food Service - Commercial Electric Ovens M-229 Food Service - Commercial Electric Steamer M-231 Food Service - Commercial Electric Griddle M-233 HVAC - ECM Fan Motors for HVAC M-235 HVAC - Dual Enthalpy Economizer Controls M-237 HVAC - Demand Control Ventilation M-239 HVAC - Energy Management Systems M-241 HVAC - CHP M-243 HVAC - Chillers M-245 HVAC - Codes M-247 October 212 (c) 212 National Grid

25 Table of Contents HVAC - Hotel Occupancy Sensors M-249 HVAC - Unitary Air Conditioners M-251 HVAC - Heat Pump Systems M-253 Lighting - Lighting Systems M-256 Lighting - Freezer/Cooler LEDs M-259 Lighting - Lighting Controls M-261 Lighting - Performance Lighting M-263 Motors/Drives - Variable Speed Drives M-265 Multiple - Custom s M-267 Refrigeration - Evaporator Fan Controls M-27 Refrigeration - velty Cooler Shutoff M-272 Refrigeration - Door Heater Controls M-274 Refrigeration - ECM Evaporator Fan Motors for Walk-in Coolers and Fr M-276 Refrigeration - Electronic Defrost Controls M-278 Refrigeration - Vending Misers M-28 Refrigeration - Case Motor Replacement M-283 Refrigeration - Cooler Night Covers M-285 October 212 (c) 212 National Grid

26 Characterizations Residential Natural Gas Efficiency s vember National Grid

27 Residential Gas Efficiency s Behavior - Home Energy Reports Version Date: PY 213 Description Home energy reports programs send monthly energy use reports to partcipating gas customers in order to encourage energy conserving behavior. Baseline Efficiency The baseline case is a customer who does not receive Home Energy Reports High Efficiency The high efficiency case is a customer who does receive Home Energy Reports Sector: Residential End Use: Behavior Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Customer receiving energy reports vember 212 (c) 212 National Grid M-1

28 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Opt-out On-bill Messaging Home Energy Reports Opt-out Home Energy Report Customers Opt-in Home Energy Report Customers Home Energy Reports Home Energy Reports New Movers Home Energy Reports.... Calc (87) Calc (87) Calc (87) Calc (87) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Opt-out On-bill Messaging Home Energy Reports (87) Opt-out Home Energy Home Energy Reports Report Customers (87) Opt-in Home Energy Report Home Energy Reports Customers (87) New Movers Home Energy Reports (87) Sources 87 Opinion Dynamics with Navigant Consulting (212). Massachusetts Three Year Cross-Cutting Behavioral Program Evaluation Integrated Report July 212. Prepared for Massachusetts Energy Efficiency Advisory Council & Behavioral Research Team. vember 212 (c) 212 National Grid M-2

29 Residential Gas Efficiency s Hot Water - DHW s Version Date: PY 213 Description DHW measures including high-efficiency low-flow showerheads and faucet aerators save water and water heating energy. Baseline Efficiency The baseline efficiency case is the existing domestic hot water equipment. High Efficiency The high efficiency case is the installation of high-efficiency domestic hot water equipment such as low-flow showerheads and faucet aerators. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed DHW efficiency measure. vember 212 (c) 212 National Grid M-3

30 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Hot water heating Residential New Construction 78 (86)..52 (86) n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Hot water heating Residential New Construction (86) Sources 86 NMR Group, Inc., KEMA, The Cadmus Group, Inc., Dorothy Conant (212). Rhode Island 211 Baseline Study of Single-Family Residential New Construction. Prepared for National Grid. vember 212 (c) 212 National Grid M-4

31 Residential Gas Efficiency s Hot Water - Water Heating System Replacement Version Date: PY 213 Description Replacement of an existing natural gas water heating system with a new high-efficiency natural gas system. Baseline Efficiency The baseline efficiency case is the existing natural gas water heating system. High Efficiency The high efficiency case is a high-efficiency natural gas water heating system. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency natural gas water heating system. vember 212 (c) 212 National Grid M-5

32 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane LI MF Water heating system replacement Income Eligible MultiFamily. Calc n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) LI MF Water heating system replacement Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Income Eligible MultiFamily (27) (78) Sources 78 The Cadmus Group, Inc. (211). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 21). Prepared for National Grid. vember 212 (c) 212 National Grid M-6

33 Residential Gas Efficiency s Hot Water - Water Heaters Version Date: PY 213 Description Installation of high efficiency gas water heaters: Indirect water heaters use astorage tank that is heated by the main boiler. The energy stored by the water tank allows the boiler to turn off and on less often, saving considerable energy. Condensing water heaters recover energy by using either a larger heat exchanger or a second heat exchanger to reduce the flue-gas temperature to the point that water vapor condenses, thus releasing even more energy. Stand-alone storage water heaters are high efficiency water heaters that are not combined with space heating devices. Tankless water heaters circulate water through a heat exchanger to be heated for immediate use, eliminating the standby heat loss associated with a storage tank. Baseline Efficiency The baseline efficiency case is a stand-alone tank water heater with an energy factor =.575. High Efficiency The high efficiency case is a stand-alone storage water heater with an energy factor >=.67, a condensing water heater with an energy factor >=.8, a tankless water heater with an energy factor >=.82, or an indirect water heater attached to an ENERGY STAR rated forced hot water gas boiler. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installation of new high-efficiency water heater vember 212 (c) 212 National Grid M-7

34 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Tankless Water Heater EF>=.95 Tankless Water Heater EF>=.82 Stand Alone Water Heater EF >=.67 Indirect water heater (attached to Gas ENERGY HTR Tankless water heater EF>=.95 HTR Tankless water heater EF>=.82 HTR Stand-alone water heater EF >=.67 HTR Indirect water heater (attached to Gas ENERGY HTR Condensing gas water heater TE >=.95 Condensing gas water heater TE >=.95 EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC (35) 9.7 (61) 3.7 (35) 8. (61) 1.3 (35) 9.7 (61) 3.7 (35) 8. (61) 8.5 (97) 8.5 (97) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Tankless Water Heater EF>=.95 Tankless Water Heater EF>=.82 Stand Alone Water Heater EF >=.67 Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (35) EnergyStar HVAC (35) EnergyStar HVAC (35) vember 212 (c) 212 National Grid M-8

35 Indirect water heater (attached to Gas ENERGY STAR FHW Boiler) HTR Tankless water heater EF>=.95 HTR Tankless water heater EF>=.82 HTR Stand-alone water heater EF >=.67 HTR Indirect water heater (attached to Gas ENERGY STAR FHW Boiler) HTR Condensing gas water heater TE >=.95 Condensing gas water heater TE >=.95 Residential Gas Efficiency s Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (49) EnergyStar HVAC (35) EnergyStar HVAC (35) EnergyStar HVAC (35) EnergyStar HVAC (49) EnergyStar HVAC (35) EnergyStar HVAC (35) Sources 35 DOE (28). ENERGY STAR Residential Water Heaters: Final Criteria Analysis. Prepared for the DOE. 61 Nexus Market Research and The Cadmus Group, Inc. (21). HEHE Process and Impact Evaluation. Prepared for GasNetworks. 97 The Cadmus Group, Inc. (212). Memo to HEHE Program Administrators Re: Impacts of Upcoming Federal Standards on HEHE Gas Space and Water Heating s. June 8, 212. vember 212 (c) 212 National Grid M-9

36 Residential Gas Efficiency s Hot Water - Low-Flow Showerheads Version Date: PY 213 Description An existing showerhead or aerator with a high flow rate is replaced with a new low flow showerhead or aerator. Baseline Efficiency The baseline efficiency case is an existing showerhead with a high flow. High Efficiency The high efficiency is a low-flow showerhead. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed low-flow showerhead vember 212 (c) 212 National Grid M-1

37 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Low-flow showerhead Income Eligible MultiFamily Low-flow showerhead EnergyWise MultiFamily Low-flow showerhead EnergyWise (95).48 (95).48 (95) n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Low-flow showerhead Income Eligible MultiFamily (95) (98) Low-flow showerhead EnergyWise MultiFamily (95) (98) Low-flow showerhead EnergyWise (95) (98) Sources 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-11

38 Residential Gas Efficiency s Hot Water - Faucet Aerators Version Date: PY 213 Description Installation of a faucet aerator with a flow rate of 1.5 GPM or less on an existing faucet with high flow. Baseline Efficiency The baseline efficiency case is an existing faucet with a high flow. High Efficiency The high efficiency is a low-flow faucet aerator. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed faucet aerator. vember 212 (c) 212 National Grid M-12

39 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Faucet aerator Income Eligible MultiFamily Faucet aerator EnergyWise MultiFamily Faucet aerator EnergyWise (95).36 (95).944 n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Faucet aerator Income Eligible MultiFamily (95) (78) Faucet aerator EnergyWise MultiFamily (95) (98) Faucet aerator EnergyWise (95) Sources 78 The Cadmus Group, Inc. (211). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 21). Prepared for National Grid. 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-13

40 Residential Gas Efficiency s HVAC - Heating System Replacement Version Date: PY 213 Description Replacement of an existing gas heating system with a new high efficiency system. Electric savings are achieved from reduced run time of the heating system fan(s). Baseline Efficiency The baseline efficiency case is the existing inefficient heating equipment. High Efficiency The high efficiency case is the new efficient heating equipment. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installation of new high-efficiency gas heating system vember 212 (c) 212 National Grid M-14

41 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Heating system replacement Single Family Appliance Management 194 (54) (54) n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Heating system replacement Single Family Appliance Management (96) (7) (7) Sources 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. 7 Quantec, LLC (2). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid. 78 The Cadmus Group, Inc. (211). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 21). Prepared for National Grid. vember 212 (c) 212 National Grid M-15

42 Residential Gas Efficiency s HVAC - Boilers, Early Replacement Version Date: PY 213 Description Early retirement of inefficient gas-fired boiler and installation of new high efficiency gas-fired boiler. The savings calculation for the early replacement boiler, in order to reflect the future replacement of the exisitng boiler with a new baseline boiler, is split into two. The first delta MMBTu and lifetime are used to calculate the savings between the code-compliant boiler and existing boiler. The second delta and lifetime are used to calculate the savinsg between the high efficiency boiler and the code-compliant boiler. Baseline Efficiency For the retirement savings over the remaining life of existing boiler, the baseline is the existing inefficient boiler, estimated to be 65% AFUE forced hot water boiler. For the high efficiency unit savings over lifetime of the new boiler, the baseline is a code-compliant AFUE = 82% forced hot water boiler High Efficiency For the retirement savings over the remaining life of existing boiler, the efficient case is a codecompliant AFUE = 82% for forced hot water boiler. For the high efficiency savings over lifetime of the new boiler, the efficient case is a new high efficiency AFUE >= 93% forced hot water boiler. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency natural gas boiler. vember 212 (c) 212 National Grid M-16

43 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane HTR Boiler (forced hot water) Early Retirement HTR Boiler (forced hot water) Early Retirement (EE) Boiler (forced hot water) Early Retirement (Retire) Boiler (forced hot water) Early Retirement (EE) EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC (49) 1.4 (49) 23.6 (49) 1.4 (49) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) HTR Boiler (forced hot water) Early Retirement (Retire) HTR Boiler (forced hot water) Early Retirement (EE) Boiler (forced hot water) Early Retirement (Retire) Boiler (forced hot water) Early Retirement (EE) Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (42) EnergyStar HVAC (42) EnergyStar HVAC (42) EnergyStar HVAC (42) vember 212 (c) 212 National Grid M-17

44 Residential Gas Efficiency s 49 GDS Associates, Inc. and Summit Blue Consulting (29). Natural Gas Energy Efficiency Potential in Massachusetts. Prepared for GasNetworks. vember 212 (c) 212 National Grid M-18

45 Residential Gas Efficiency s HVAC - Deep Energy Retrofit Version Date: PY 213 Description Deep energy retrofit projects for residential new construction include the installation of a new roof, siding, and or the refinishing of a basement. Baseline Efficiency The baseline case is the performance of the house before participation in the program High Efficiency The efficient case is the post-retrofit performance of a house participating the program Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Completed deep energy retrofit project. vember 212 (c) 212 National Grid M-19

46 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane DER Walls (gas) DER Roofs (gas) DER Basements (gas) Residential New Construction Residential New Construction Residential New Construction... Calc (86) Calc (86) Calc (86) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp DER Walls (gas) Residential New Construction (86) DER Roofs (gas) Residential New Construction (86) DER Basements (gas) Residential New Construction (86) Sources 86 NMR Group, Inc., KEMA, The Cadmus Group, Inc., Dorothy Conant (212). Rhode Island 211 Baseline Study of Single-Family Residential New Construction. Prepared for National Grid. vember 212 (c) 212 National Grid M-2

47 Residential Gas Efficiency s HVAC - Demand Circulators Version Date: PY 213 Description Demand circulators distribute hot water more efficiently by sensing the demand for hot water. Baseline Efficiency The baseline is a system that circulates hot water at a constant volume. High Efficiency The high-efficiency case is a system that circulates hot water efficiently based on the demand. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Complete demand circulator project. vember 212 (c) 212 National Grid M-21

48 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Demand circulator Income Eligible MultiFamily 96 (95) Demand circulator EnergyWise MultiFamily 96 (95) Demand circulator EnergyWise 96 (95).16 (95).16 (95).16 (95) 195. (95) 195. (95) 195. (95) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Demand circulator Income Eligible MultiFamily (95) (98) (98) (98) (tbd) (tbd) Demand circulator EnergyWise MultiFamily (95) (98) (98) (98) (tbd) (tbd) Demand circulator EnergyWise (95) (98) (98) (98) (tbd) (tbd) Sources 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-22

49 Residential Gas Efficiency s HVAC - EW Air Sealing Version Date: PY 213 Description Thermal shell air leaks are sealed through strategic use and location of air-tight materials. Baseline Efficiency The baseline efficiency case is the existing building before the air sealing measure is implemented. The baseline building is characterized by the existing CFM5 measurement (CFM5PRE) for single family homes, or the existing air changes per hour (ACHPRE) for multi-family facilities, which is measured prior to the implementation of the air sealing measure. High Efficiency The high efficiency case is the existing building after the air sealing measure is implemented. The high efficiency building is characterized by the new CFM5 measurement for single family homes (CFM5POST), or the new air changes per hour (ACHPOST) for multi-family facilities, which is measured after the air sealing measure is implemented. Sector: Multifamily End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Completed air sealing project. vember 212 (c) 212 National Grid M-23

50 Residential Gas Efficiency s Hours Heating hours are characterized by the heating degree days for the facility. The total heating degree days for residential buildings in Rhode Island is assumed to be This value is an average BASE 6 Annual Heating Degree Day values for weather stations in Rhode Island and southeastern Massachusetts based on NOAA 3-year weather data. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane LI MF Air Sealing Income Eligible MultiFamily MF Air Sealing EnergyWise MultiFamily SF Air Sealing EnergyWise... Calc 2.4 (95) Calc n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp LI MF Air Sealing Income Eligible MultiFamily (27) (78) MF Air Sealing EnergyWise MultiFamily (27) SF Air Sealing EnergyWise (27) Sources 1 NOAA 3-year weather data. 78 The Cadmus Group, Inc. (211). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 21). Prepared for National Grid. 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. vember 212 (c) 212 National Grid M-24

51 Residential Gas Efficiency s vember 212 (c) 212 National Grid M-25

52 Residential Gas Efficiency s HVAC - EW Other Insulation Version Date: PY 213 Description Insulation upgrades (other than basement, roofs, and walls) applied in existing facilities. Baseline Efficiency The baseline efficiency case is the existing facility or equipment prior to the implementation of additional insulation. High Efficiency The high efficiency case is the existing facility or equipment after the implementation of additional insulation. Sector: Multifamily End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Completed insulation project. vember 212 (c) 212 National Grid M-26

53 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane LI MF Other Insulation - Existing Hatches: LI MF Other Insulation - attic staircase cover (therma- MF Other Insulation - Existing Hatches: MF Other Insulation - attic staircase cover (therma- SF Other Insulation - Existing Hatches: SF Other Insulation - attic staircase cover (therma- Income Eligible MultiFamily Income Eligible MultiFamily EnergyWise MultiFamily EnergyWise MultiFamily EnergyWise EnergyWise (95) 2.4 (95) 2.4 (95) 2.4 (95) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) LI MF Other Insulation - Existing Hatches: weaatherstrip, insulate, dam perimeter LI MF Other Insulation - attic staircase cover (thermadome) MF Other Insulation - Existing Hatches: weaatherstrip, insulate, dam perimeter MF Other Insulation - attic staircase cover (thermadome) SF Other Insulation - Existing Hatches: weaatherstrip, insulate, dam perimeter SF Other Insulation - attic staircase cover (thermadome) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Income Eligible MultiFamily (95) (78) Income Eligible MultiFamily EnergyWise MultiFamily EnergyWise MultiFamily 25 (95) 25 (95) 25 (95) (78) EnergyWise (95) EnergyWise (95) vember 212 (c) 212 National Grid M-27

54 Residential Gas Efficiency s Sources 78 The Cadmus Group, Inc. (211). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 21). Prepared for National Grid. 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. vember 212 (c) 212 National Grid M-28

55 Residential Gas Efficiency s HVAC - EW Shell Insulation Version Date: PY 213 Description Shell insulation upgrades applied in existing facilities including improved insulation in attics, basements and sidewalls. Baseline Efficiency The baseline efficiency case is characterized by the total R-value of the existing attic, basement or sidewall (RBASE). This is calculated as the R-value of the existing insulation, estimated by the program contractor, plus the R-value of the ceiling, floor, or wall (for all projects: RCEILING = 3.36; RFLOOR = 6.16; RWALL = 6.65). High Efficiency The high efficiency case is characterized by the total R-value of the attic after the installation of additional attic, basement or sidewall insulation. This is calculated as the sum of the existing Rvalue (RBASE) plus the R-value of the added insulation (RADD). Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Completed insulation project. vember 212 (c) 212 National Grid M-29

56 Residential Gas Efficiency s Hours Heating hours are characterized by the heating degree days for the facility. The total heating degree days for residential buildings in Rhode Island is assumed to be This value is an average BASE 6 Annual Heating Degree Day values for weather stations in Rhode Island and southeastern Massachusetts based on NOAA 3-year weather data. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane LI MF Shell Insulation Income Eligible MultiFamily MF Shell Insulation EnergyWise MultiFamily SF Shell Insulation EnergyWise (95) 2.4 (95) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp LI MF Shell Insulation Income Eligible MultiFamily (95) (78) MF Shell Insulation EnergyWise MultiFamily (95) SF Shell Insulation EnergyWise (95) Sources 1 NOAA 3-year weather data. 78 The Cadmus Group, Inc. (211). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 21). Prepared for National Grid. 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. vember 212 (c) 212 National Grid M-3

57 Residential Gas Efficiency s HVAC - Furnaces Version Date: PY 213 Description Installation of a new high efficiency space heating gas-fired furnace with an electronically commutated motor (ECM) for the fan. Baseline Efficiency The baseline efficiency case is a 9% AFUE furnace High Efficiency The high efficiency case is a new furnace with AFUE >= 95% and an electronically commutated motor Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installation of new high-efficiency furnace with ECM vember 212 (c) 212 National Grid M-31

58 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane HTR Furnace (forced hot air) AFUE >= 97% HTR Furnace (forced hot air) AFUE = 95% w/ecm Furnace (forced hot air) AFUE >= 97% Furnace (forced hot air) AFUE = 95% w/ecm EnergyStar HVAC 246 (63) EnergyStar HVAC 246 (63) EnergyStar HVAC 246 (63) EnergyStar HVAC 246 (63).182 (63).182 (63).182 (63).182 (63) 5.9 (97) 4.5 (97) 5.9 (97) 4.5 (97) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) HTR Furnace (forced hot air) AFUE >= 97% HTR Furnace (forced hot air) AFUE = 95% w/ecm Furnace (forced hot air) AFUE >= 97% Furnace (forced hot air) AFUE = 95% w/ecm Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (44) EnergyStar HVAC (44) EnergyStar HVAC (44) EnergyStar HVAC (44) 63 Energy & Resource Solutions (211). BFM Impact Evaluation Report. Prepared for the Electric and Gas Program Administrators of Massachusetts. 97 The Cadmus Group, Inc. (212). Memo to HEHE Program Administrators Re: Impacts of Upcoming Federal Standards on HEHE Gas Space and Water Heating s. June 8, 212. vember 212 (c) 212 National Grid M-32

59 Residential Gas Efficiency s HVAC - Boilers Version Date: PY 213 Description Installation of a new space heating gas-fired boiler. Baseline Efficiency The baseline efficiency case is a boiler with an AFUE equal to 8%. High Efficiency The high efficiency case is a boiler with an AFUE greater than or equal to 9%. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installation of new high-efficiency boiler vember 212 (c) 212 National Grid M-33

60 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane HTR Boiler (forced hot water) AFUE >= 96% HTR Boiler (forced hot water) AFUE >= 9% HTR Boiler (forced hot water) AFUE >= 85% Boiler (forced hot water) AFUE >= 96% Boiler (forced hot water) AFUE >= 9% EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC (49) 1.4 (49) 7.2 (49) 21.3 (49) 1.4 (61) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) HTR Boiler (forced hot water) AFUE >= 96% HTR Boiler (forced hot water) AFUE >= 9% HTR Boiler (forced hot water) AFUE >= 85% Boiler (forced hot water) AFUE >= 96% Boiler (forced hot water) AFUE >= 9% Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (42) EnergyStar HVAC (42) EnergyStar HVAC (42) EnergyStar HVAC (42) EnergyStar HVAC (42) 49 GDS Associates, Inc. and Summit Blue Consulting (29). Natural Gas Energy Efficiency Potential in Massachusetts. Prepared for GasNetworks. 61 Nexus Market Research and The Cadmus Group, Inc. (21). HEHE Process and Impact Evaluation. Prepared for GasNetworks. vember 212 (c) 212 National Grid M-34

61 Residential Gas Efficiency s HVAC - Heating Version Date: PY 213 Description This measure involves the installation of a high-efficiency natural gas heating system. Baseline Efficiency The baseline efficiency case is a standard efficiency natural gas heating system. High Efficiency The high efficiency case is the installation of a high-efficiency natural gas heating system. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency natural gas heating system. vember 212 (c) 212 National Grid M-35

62 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Heating Residential New Construction Calc (86) Calc (86) Calc (86) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Heating Residential New Construction (86) Sources 86 NMR Group, Inc., KEMA, The Cadmus Group, Inc., Dorothy Conant (212). Rhode Island 211 Baseline Study of Single-Family Residential New Construction. Prepared for National Grid. vember 212 (c) 212 National Grid M-36

63 Residential Gas Efficiency s HVAC - Integrated Boiler/Water Heater Version Date: PY 213 Description This measure promotes the installation of a combined high-efficiency boiler and water heating unit. Combined boiler and water heating systems are more efficient than separate systems because they eliminate the standby heat losses of an additional tank. Baseline Efficiency The baseline efficiency case is an 8% AFUE boiler with a.594 EF water heater. High Efficiency The high efficiency case is an integrated water heater/condensing boiler with a 9% AFUE boiler and a.9 EF water heater. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installation of new high-efficiency integrated boiler/water heater vember 212 (c) 212 National Grid M-37

64 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Integrated boiler/water heater EnergyStar HVAC HTR Integrated boiler/water heater EnergyStar HVAC (42) 21.1 (42) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Integrated boiler/water heater EnergyStar HVAC (42) HTR Integrated boiler/water EnergyStar HVAC heater (42) Sources 42 Environmental Protection Agency (29). Life Cycle Cost Estimate for ENERGY STAR Qualified Boiler. vember 212 (c) 212 National Grid M-38

65 Residential Gas Efficiency s HVAC - Programmable Thermostats Version Date: PY 213 Description Installation of a programmable thermostat which gives the ability to adjust heating or airconditioning operating times according to a pre-set schedule. Baseline Efficiency The baseline efficiency case is an HVAC system using natural gas to provide space heating without a programmable thermostat. High Efficiency The high efficiency case is an HVAC system that has a programmable thermostat installed. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installation of programmable thermostat vember 212 (c) 212 National Grid M-39

66 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Programmable thermostat WiFi programmable thermostat Income Eligible MultiFamily EnergyWise MultiFamily Programmable thermostat EnergyWise MultiFamily WiFi programmable thermostat EnergyWise Programmable thermostat EnergyWise Programmable thermostat (oil) WiFi programmable thermostat with cooling WiFi programmable thermostat HTR ENERGY STAR Programmable thermostat ENERGY STAR Programmable thermostat EnergyStar HVAC EnergyStar HVAC 14 (8) EnergyStar HVAC EnergyStar HVAC EnergyStar HVAC (8) (95) 6.6 (95) 2.3 (95) 6.6 (95) 2.3 (95). 6.6 (95) 6.6 (95) 3.2 (92) 3.2 (92) 3.2 (91) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Programmable thermostat Income Eligible MultiFamily (56) (98) WiFi programmable EnergyWise thermostat MultiFamily (56) (98) Programmable thermostat EnergyWise MultiFamily (56) (98) WiFi programmable EnergyWise thermostat (56) (98) Programmable thermostat EnergyWise (56) (98) Programmable thermostat (oil) EnergyStar HVAC (56) (tbd) vember 212 (c) 212 National Grid M-4

67 WiFi programmable thermostat with cooling WiFi programmable thermostat HTR ENERGY STAR Programmable thermostat ENERGY STAR Programmable thermostat Residential Gas Efficiency s Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (56) EnergyStar HVAC (56) EnergyStar HVAC (56) EnergyStar HVAC (56) Sources 78 The Cadmus Group, Inc. (211). Impact Evaluation for Rhode Island Multifamily Gas Program EnergyWise (Program Year 21). Prepared for National Grid. 8 The Cadmus Group, Inc. (211). Memo: Wi-fi Programmable Thermostat Billing Analysis. Prepared for Keith Miller and Whitney Domigan, National Grid. 91 The Cadmus Group, Inc. (212). EnergyWise Single Family Impact Evaluation. Prepared for National Grid. 92 The Cadmus Group, Inc. (212). Home Energy Services Impact Evaluation. Prepared for Massachusetts Program Administrators. 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-41

68 Residential Gas Efficiency s HVAC - Weatherization Version Date: PY 213 Description Installation of weatherization measures such as air sealing and insulation in gas heated homes. Electric savings are achieved from reduced run time of the HVAC system fan(s). Baseline Efficiency The baseline efficiency case is the existing home shell. High Efficiency The high efficiency case can be a combination of increased insulation, air sealing, duct sealing, and other improvements to the home shell. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Household with weatherization measures installed vember 212 (c) 212 National Grid M-42

69 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Weatherization Single Family Appliance Management 7 (54) (54) n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Weatherization Single Family Appliance Management (42) (7) (7) Sources 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. 7 Quantec, LLC (2). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-43

70 Residential Gas Efficiency s HVAC - Boiler Controls Version Date: PY 213 Description Boiler reset controls are devices that improve the efficiency of an existing boiler system by modulating the hot water temperature setpoint. Reset controls automatically control boiler water temperature based on outdoor temperature using a software program; load controls sense the thermal demand of the heating system and resets the water temperature based on the demand. Baseline Efficiency The baseline efficiency case is a boiler without reset or load controls. High Efficiency The efficient case is a boiler with reset or load controls, which reset the supply water temperature based on outdoor temperatures and/or building load. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installation of boiler reset control on existing boiler vember 212 (c) 212 National Grid M-44

71 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane HTR Boiler reset control EnergyStar HVAC Boiler reset control EnergyStar HVAC Boiler load control EnergyStar HVAC (23) 4.5 (23) 2.7 (94) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp HTR Boiler reset control EnergyStar HVAC (23) Boiler reset control EnergyStar HVAC (23) Boiler load control EnergyStar HVAC (93) Sources 23 ACEEE (26). Emerging Technologies Report: Advanced Boiler Controls. Prepared for ACEEE. 94 The Cadmus Group, Inc. (212). Impact Evaluation of the Boiler Reset Control Pilot Program. Prepared for the Electric and Gas Energy Efficiency Program Administrators of Massachusetts. vember 212 (c) 212 National Grid M-45

72 Residential Gas Efficiency s HVAC - Heat Recovery Ventilators Version Date: PY 213 Description Heat Recovery Ventilators (HRV) can help make mechanical ventilation more cost effective by reclaiming energy from exhaust airflows. An electric penalty results due to the increased electricity consumed by the system fans. Baseline Efficiency The baseline efficiency case is an ASHRAE 62.2-compliant exhaust fan system with no heat recovery. High Efficiency The high efficiency case is an exhaust fan system with heat recovery. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installation of heat recovery ventilation system vember 212 (c) 212 National Grid M-46

73 Residential Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane HTR Heat recovery ventilator EnergyStar HVAC -133 (49) Heat recovery ventilator EnergyStar HVAC -133 (49) (49) 7.7 (49) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp HTR Heat recovery ventilator EnergyStar HVAC (49) (7) (7) Heat recovery ventilator EnergyStar HVAC (49) (7) (7) Sources 49 GDS Associates, Inc. and Summit Blue Consulting (29). Natural Gas Energy Efficiency Potential in Massachusetts. Prepared for GasNetworks. 7 Quantec, LLC (2). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-47

74 Characterizations Residential Electric Efficiency s vember National Grid

75 Residential Electric Efficiency s Behavior - Audits Version Date: PY 213 Description Installation of basic educational measures during an audit to help customers become more aware of energy efficiency. Baseline Efficiency The baseline efficiency case assumes no measures installed. High Efficiency The high efficiency case includes basic educational measures such as CFLs, low flow showerheads, pooland air conditioner timers, torchieres, and programmable thermostats. Sector: Residential End Use: Behavior Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Completed audit. vember 212 (c) 212 National Grid M-48

76 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW SF Audits EnergyWise 812 (tbd).22 (tbd). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EW SF Audits EnergyWise (tbd) (98) (98) (98) (tbd) (tbd) Sources 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-49

77 Residential Electric Efficiency s Behavior - Basic Educational s Version Date: PY 213 Description Installation of basic educational measures during an audit to help customers become more aware of energy efficiency. Baseline Efficiency The baseline efficiency case assumes no measures installed. High Efficiency The high efficiency case includes basic educational measures such as CFLs, low flow showerheads, pooland air conditioner timers, torchieres, and programmable thermostats. Sector: Residential End Use: Behavior Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Completed audit. vember 212 (c) 212 National Grid M-5

78 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Baseload Single Family Appliance Management 138 (54).38. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Baseload Single Family Appliance Management (tbd) (tbd) (tbd) (7) (7) Sources 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. 7 Quantec, LLC (2). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-51

79 Residential Electric Efficiency s Behavior - Home Energy Reports Version Date: PY 213 Description Home energy reports programs send monthly energy use reports to partcipating gas customers in order to encourage energy conserving behavior. Baseline Efficiency The baseline case is a customer who does not receive Home Energy Reports High Efficiency The high efficiency case is a customer who does receive Home Energy Reports Sector: Residential End Use: Behavior Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Customer receiving energy reports vember 212 (c) 212 National Grid M-52

80 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Opt-out On-bill Messaging Home Energy Reports Calc Opt-out Home Energy Report Customers Opt-in Home Energy Report Customers Home Energy Reports Home Energy Reports Calc Calc New Movers Home Energy Reports Calc Calc Calc Calc Calc.... n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Opt-out On-bill Messaging Home Energy Reports (87) (9) (9) Opt-out Home Energy Home Energy Reports Report Customers (87) (9) (9) Opt-in Home Energy Report Home Energy Reports Customers (87) (9) (9) New Movers Home Energy Reports (87) (9) (9) Sources 9 The Cadmus Group, Inc. (212). Demand Impact Model. Prepared for the Massachusetts Program Administrators. vember 212 (c) 212 National Grid M-53

81 Residential Electric Efficiency s Hot Water - EW DHW s Version Date: PY 213 Description DHW measures including high-efficiency low-flow showerheads and faucet aerators save water and water heating energy. Baseline Efficiency The baseline efficiency case is the existing domestic hot water equipment. High Efficiency The high efficiency case is the installation of high-efficiency domestic hot water equipment such as low-flow showerheads and faucet aerators. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed DHW efficiency measure. vember 212 (c) 212 National Grid M-54

82 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane DHW (electric) EnergyWise 19 (tbd).17 (tbd). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp DHW (electric) EnergyWise (98) (98) (98) (7) (7) Sources 7 Quantec, LLC (2). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-55

83 Residential Electric Efficiency s Hot Water - Low-Flow Showerheads Version Date: PY 213 Description An existing showerhead or aerator with a high flow rate is replaced with a new low flow showerhead or aerator. Baseline Efficiency The baseline efficiency case is an existing showerhead with a high flow. High Efficiency The high efficiency is a low-flow showerhead. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed low-flow showerhead vember 212 (c) 212 National Grid M-56

84 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW LI Showerheads (Elec Ht) Income Eligible MultiFamily 129 (98) EW Showerhead (electric) EnergyWise MultiFamily 129 (98).22 (98).22 (98).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EW LI Showerheads (Elec Income Eligible Ht) MultiFamily (98) (98) (98) (tbd) (tbd) EW Showerhead (electric) EnergyWise MultiFamily (98) (98) (98) (tbd) (tbd) Sources 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-57

85 Residential Electric Efficiency s Hot Water - Heat Pump Water Heaters Version Date: PY 213 Description Installation of a heat pump water heater (HPWH) instead of an electric resistance water heater. Baseline Efficiency The baseline efficiency case is a new, standard efficiency electric resistance hot water heater. High Efficiency The high efficiency case is a high efficiency heat pump water heater. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed heat pump water heater. vember 212 (c) 212 National Grid M-58

86 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane HPWH 5 gallon (electric prod) Single Family Appliance Management HPWH 8 gallon (electric) EnergyStar HVAC 2,672 (88) HPWH 5 gallon (electric) EnergyStar HVAC 1,775 (88) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp HPWH 5 gallon (electric Single Family prod) Appliance (88) (88) Management HPWH 8 gallon (electric) EnergyStar HVAC (88) (88) HPWH 5 gallon (electric) EnergyStar HVAC (88) (88) Sources 88 Steven Winter Associates, Inc. (212). Heat Pump Water Heaters Evaluation of Field Installed Performance. Sponsored by National Grid and NSTAR vember 212 (c) 212 National Grid M-59

87 Residential Electric Efficiency s Hot Water - DHW s Version Date: PY 213 Description DHW measures including high-efficiency low-flow showerheads and faucet aerators save water and water heating energy. Baseline Efficiency The baseline efficiency case is the existing domestic hot water equipment. High Efficiency The high efficiency case is the installation of high-efficiency domestic hot water equipment such as low-flow showerheads and faucet aerators. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed DHW efficiency measure. vember 212 (c) 212 National Grid M-6

88 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane DHWater (electric) DHWater (oil) DHWater (gas & other) Single Family Appliance Management Single Family Appliance Management Single Family Appliance Management 134 (54) (54).9 (54) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp DHWater (electric) Single Family Appliance (tbd) (tbd) (tbd) (7) (7) Management DHWater (oil) Single Family Appliance (tbd) Management DHWater (gas & Single Family other) Appliance Management (tbd) Sources 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. 7 Quantec, LLC (2). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-61

89 Residential Electric Efficiency s Hot Water - Clothes Washers Version Date: PY 213 Description This measure promotes the purchase of an ENERGY STAR clothes washer instead of a standard efficiency model. Baseline Efficiency Standard efficiency clothes washer. High Efficiency ENERGY STAR qualified clothes washer. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed ENERGY STAR clothes washer. vember 212 (c) 212 National Grid M-62

90 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Sources vember 212 (c) 212 National Grid M-63

91 Residential Electric Efficiency s Hot Water - Waterbed Replacement Version Date: PY 213 Description Replacement of waterbed mattress with a standard mattress. Baseline Efficiency The baseline efficiency case is an existing waterbed mattress. High Efficiency The high efficiency case is a new standard mattress. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Replacement of existing waterbed mattress with new standard mattress. vember 212 (c) 212 National Grid M-64

92 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Waterbed mattress replacement Single Family Appliance Management 872 (54).19. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Waterbed mattress replacement Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Single Family Appliance (tbd) (tbd) (tbd) (7) (7) Management 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. 7 Quantec, LLC (2). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-65

93 Residential Electric Efficiency s Hot Water - Faucet Aerators Version Date: PY 213 Description Installation of a faucet aerator with a flow rate of 1.5 GPM or less on an existing faucet with high flow. Baseline Efficiency The baseline efficiency case is an existing faucet with a high flow. High Efficiency The high efficiency is a low-flow faucet aerator. Sector: Residential End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed faucet aerator. vember 212 (c) 212 National Grid M-66

94 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW LI Aerator (electric) Income Eligible MultiFamily 97 (98) EW Aerator (Elec Ht) EnergyWise MultiFamily 97 (98).16 (98).16 (98).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EW LI Aerator (electric) Income Eligible MultiFamily (98) (98) (98) (tbd) (tbd) EW Aerator (Elec Ht) EnergyWise MultiFamily (98) (98) (98) (tbd) (tbd) Sources 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-67

95 Residential Electric Efficiency s HVAC - Furnace Fan Motors Version Date: PY 213 Description Installation of high efficiency motors on residential furnace fans, including electronically commutated motors (ECMs) or steady state brushless furnace fan motors. Baseline Efficiency The baseline efficiency case is the installation of a furnace with a standard efficiency steady state motor. High Efficiency The high efficiency case is the installation an electronically commutated motor or brushless fan motor on a residential furnace. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency furnace fan motor. vember 212 (c) 212 National Grid M-68

96 Residential Electric Efficiency s Hours Equivalent full load cooling hours are 442 and equivalent full load heating hours are 149. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane ECM Gas Rebate EnergyStar HVAC 6 ECM / Oil Replace Furnace EnergyStar HVAC 6 Brushless Furnace Fan motor (BFM) Wm Air Furnace ECM (GN Reb) EnergyStar HVAC 246 (63) EnergyStar HVAC 168 (63) (63).124 (63) (79) (63) (63) 7.2 (44) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp ECM Gas Rebate EnergyStar HVAC (12) (tbd) (tbd) (tbd) (4) (4) ECM / Oil Replace Furnace EnergyStar HVAC (12) (tbd) (tbd) (tbd) (4) (4) Brushless Furnace Fan motor EnergyStar HVAC (BFM) (12) (tbd) (tbd) (tbd) (63) (63) Wm Air Furnace ECM (GN EnergyStar HVAC Reb) (12) (tbd) (tbd) (tbd) (4) (4) Sources 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. 44 Environmental Protection Agency (29). Life Cycle Cost Estimate for ENERGY STAR Qualified Gas Residential Furnace. 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. 63 Energy & Resource Solutions (211). BFM Impact Evaluation Report. Prepared for the Electric and Gas Program Administrators of Massachusetts. vember 212 (c) 212 National Grid M-69

97 Residential Electric Efficiency s 79 The Cadmus Group, Inc. (211). MEMO: BFM Initial Results. Prepared for Gail Azulay, NSTAR and Bob Wirtshafter, EEAC. vember 212 (c) 212 National Grid M-7

98 Residential Electric Efficiency s HVAC - Heat Pump Digital Check-up/Tune-up Version Date: PY 213 Description Tune-up of an existing heat pump system. Baseline Efficiency The baseline efficiency case is a standard residential heat pump system that does not operating according to manufacturer specifications. High Efficiency The high efficiency case is the same baseline system but which operates according to manufacturer specifications. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Completed tune-up of existing heat pump system vember 212 (c) 212 National Grid M-71

99 Residential Electric Efficiency s Hours The equivalent full load heating hours are 1,2 hours per year and the equivalent full load cooling hours are 36 hours per year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane CoolSmart HP Digital Checkup/Tune-up EnergyStar HVAC n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) CoolSmart HP Digital Checkup/Tune-up Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (27) (tbd) (tbd) (tbd) Sources 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. vember 212 (c) 212 National Grid M-72

100 Residential Electric Efficiency s HVAC - EW Other Insulation Version Date: PY 213 Description Insulation upgrades (other than basement, roofs, and walls) applied in existing facilities. Baseline Efficiency The baseline efficiency case is the existing facility or equipment prior to the implementation of additional insulation. High Efficiency The high efficiency case is the existing facility or equipment after the implementation of additional insulation. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Completed insulation project. vember 212 (c) 212 National Grid M-73

101 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW LI Insulation (electric) Income Eligible MultiFamily 465 EW Insulation (electric) EnergyWise MultiFamily (tbd).183 (tbd).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EW LI Insulation (electric) Income Eligible MultiFamily (27) (98) (98) (98) (9) (9) EW Insulation (electric) EnergyWise MultiFamily (27) (98) (98) (98) (9) (9) Sources 9 The Cadmus Group, Inc. (212). Demand Impact Model. Prepared for the Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-74

102 Residential Electric Efficiency s HVAC - ECM Circulator Pumps Version Date: PY 213 Description Heating hot water circulation retrofit projects replacing the existing hot water circulation systems with ECM pumps and zone valves. Baseline Efficiency The baseline case is standard efficiency steady -state moto without variable speed capabilites High Efficiency The efficient case is the installation of a pump with an electronically commutated motor (ECM) with variable speed capabilities on a boiler Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed ECM circulator pump retrofit project. vember 212 (c) 212 National Grid M-75

103 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane ECM HW circulator pumps EnergyStar HVAC 17 (93).56 (tbd). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp ECM HW circulator pumps EnergyStar HVAC (93) (tbd) (tbd) Sources 93 The Cadmus Group, Inc. (212). Impact Evaluation of the ECM Circulator Pump Pilot Program. Prepared for the Electric and Gas Energy Efficiency Program Administrators of Massachusetts. vember 212 (c) 212 National Grid M-76

104 Residential Electric Efficiency s HVAC - Heating System (Rebate) Version Date: PY 213 Description Replacement of existing oil or propane heating system with a new high efficiency system. Electric savings can be attributed to reduced fan run time and reduced usage of electric space heaters. Baseline Efficiency The baseline efficiency case is the existing inefficient heating equipment. High Efficiency The high efficiency case is the new efficient heating equipment. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency heating system. vember 212 (c) 212 National Grid M-77

105 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Heating system replacement (oil) EnergyStar HVAC 2 (tbd).1 (tbd). 8.8 (44) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Heating system replacement (oil) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (44) (tbd) (tbd) (tbd) (9) (9) Sources 44 Environmental Protection Agency (29). Life Cycle Cost Estimate for ENERGY STAR Qualified Gas Residential Furnace. 9 The Cadmus Group, Inc. (212). Demand Impact Model. Prepared for the Massachusetts Program Administrators. vember 212 (c) 212 National Grid M-78

106 Residential Electric Efficiency s HVAC - Heating System Replacement Version Date: PY 213 Description Replacement of existing oil heating system with a new high efficiency system. Electric savings can be attributed to reduced fan run time and reduced usage of electric space heaters. Baseline Efficiency The baseline efficiency case is the existing inefficient heating equipment. High Efficiency The high efficiency case is the new efficient heating equipment. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency heating system. vember 212 (c) 212 National Grid M-79

107 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Heating system replacement Single Family Appliance Management 194 (54) (54) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Heating system replacement Single Family Appliance Management (44) (tbd) (tbd) (tbd) (7) (7) Sources 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. 7 Quantec, LLC (2). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-8

108 Residential Electric Efficiency s HVAC - EW Air Sealing Version Date: PY 213 Description Thermal shell air leaks are sealed through strategic use and location of air-tight materials. Baseline Efficiency The baseline efficiency case is the existing building before the air sealing measure is implemented. The baseline building is characterized by the existing CFM5 measurement (CFM5PRE) for single family homes, or the existing air changes per hour (ACHPRE) for multi-family facilities, which is measured prior to the implementation of the air sealing measure. High Efficiency The high efficiency case is the existing building after the air sealing measure is implemented. The high efficiency building is characterized by the new CFM5 measurement for single family homes (CFM5POST), or the new air changes per hour (ACHPOST) for multi-family facilities, which is measured after the air sealing measure is implemented. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Completed air sealing project. vember 212 (c) 212 National Grid M-81

109 Residential Electric Efficiency s Hours Heating hours are characterized by the heating degree days for the facility. The total heating degree days for residential buildings in Rhode Island is assumed to be This value is an average BASE 6 Annual Heating Degree Day values for weather stations in Rhode Island and southeastern Massachusetts based on NOAA 3-year weather data. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW LI Air Sealing (electric) Income Eligible MultiFamily 24 EW Air Sealing (electric) EnergyWise MultiFamily (tbd).154 (tbd).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EW LI Air Sealing (electric) Income Eligible MultiFamily (27) (98) (98) (98) (9) (9) EW Air Sealing (electric) EnergyWise MultiFamily (27) (98) (98) (98) (9) (9) Sources 1 NOAA 3-year weather data. 9 The Cadmus Group, Inc. (212). Demand Impact Model. Prepared for the Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-82

110 Residential Electric Efficiency s HVAC - Room AC Version Date: PY 213 Description The installation of ENERGY STAR qualified room air conditioners. ENERGY STAR qualified air conditioners are typically 1% more efficient than models meeting federal standards. Baseline Efficiency The baseline efficiency case is a window AC unit that meets the minimum federal efficiency standard for efficiency which currently is EER 9.8. High Efficiency The high efficiency level is a room AC unit meeting or exceeding the federal efficiency standard by 1% or more. Average size is 1, Btu and average EERs is 1.8. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency room air-conditioner. vember 212 (c) 212 National Grid M-83

111 Residential Electric Efficiency s Hours Equivalent full load hours are 2 hours per year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Room AC (1.8) EnergyStar Products 43 (47).12. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Room AC (1.8) EnergyStar Products (47) Sources 37 RLW Analytics (28). Coincidence Factor Study Residential Air Conditioners. Prepared for rtheast Energy Efficiency Partnerships New England Evaluation and State Program Working Group. 47 Environmental Protection Agency (29). Life Cycle Cost Estimate for ENERGY STAR Qualified Room Air Conditioner. vember 212 (c) 212 National Grid M-84

112 Residential Electric Efficiency s HVAC - Ductless MiniSplits Version Date: PY 213 Description The installation of a more efficient ENERGY STAR rated Ductless MiniSplit system. Baseline Efficiency The baseline efficiency case is a non- ENERGY STAR rated ductless mini split heat pump with SEER 13, EER 1 and HSPF 7.7 High Efficiency The high efficiency case is a high-efficiency Ductless Mini Split System. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Installed high-efficiency ductless minisplit system. vember 212 (c) 212 National Grid M-85

113 Residential Electric Efficiency s Hours The equivalent full load hours are 1,2 hours/year for heating and 36 hours/year for cooling. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane MiniSplit HP SEER 23, EER 13, HSPF 1.6 MiniSplit HP SEER 19, EER 12.83, HSPF 1. MiniSplit HP SEER 14.5, EER 13 EnergyStar HVAC 656 EnergyStar HVAC 535 EnergyStar HVAC (tbd).147 (tbd) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) MiniSplit HP SEER 23, EER 13, HSPF 1.6 MiniSplit HP SEER 19, EER 12.83, HSPF 1. MiniSplit HP SEER 14.5, EER 13 Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. vember 212 (c) 212 National Grid M-86

114 Residential Electric Efficiency s HVAC - Heat Pump Quality Installation Verification (QIV) Version Date: PY 213 Description The verification of proper charge and airflow during installation of new Heat Pump systems. Baseline Efficiency The baseline efficiency case is a heating and cooling system with SEER = 14.5, EER = 12 and HSPF = 8.2) not installed according to manufacturer specifications. High Efficiency The high efficiency case is the same heating and cooling system not installed according to manufacturer specifications. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Completed QIV on new heat pump system vember 212 (c) 212 National Grid M-87

115 Residential Electric Efficiency s Hours The equivalent full load heating hours are 1,2 hours per year and the equivalent full load cooling hours are 36 hours per year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane CoolSmart HP QIV NES EnergyStar HVAC 38 CoolSmart HP QIV ES EnergyStar HVAC n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp CoolSmart HP QIV NES EnergyStar HVAC (27) (tbd) (tbd) (tbd) (tbd) (tbd) CoolSmart HP QIV ES EnergyStar HVAC (27) (tbd) (tbd) (tbd) (tbd) (tbd) Sources 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. vember 212 (c) 212 National Grid M-88

116 Residential Electric Efficiency s HVAC - EW Shell Insulation Version Date: PY 213 Description Shell insulation upgrades applied in existing facilities including improved insulation in attics, basements and sidewalls. Baseline Efficiency The baseline efficiency case is characterized by the total R-value of the existing attic, basement or sidewall (RBASE). This is calculated as the R-value of the existing insulation, estimated by the program contractor, plus the R-value of the ceiling, floor, or wall (for all projects: RCEILING = 3.36; RFLOOR = 6.16; RWALL = 6.65). High Efficiency The high efficiency case is characterized by the total R-value of the attic after the installation of additional attic, basement or sidewall insulation. This is calculated as the sum of the existing Rvalue (RBASE) plus the R-value of the added insulation (RADD). Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Completed insulation project. vember 212 (c) 212 National Grid M-89

117 Residential Electric Efficiency s Hours Heating hours are characterized by the heating degree days for the facility. The total heating degree days for residential buildings in Rhode Island is assumed to be This value is an average BASE 6 Annual Heating Degree Day values for weather stations in Rhode Island and southeastern Massachusetts based on NOAA 3-year weather data. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW LI Insulation (electrict) Income Eligible MultiFamily 465 EW Insulation (electric) EnergyWise MultiFamily (tbd).183 (tbd).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EW LI Insulation (electrict) Income Eligible MultiFamily (27) (98) (98) (98) (9) (9) EW Insulation (electric) EnergyWise MultiFamily (27) (98) (98) (98) (9) (9) Sources 1 NOAA 3-year weather data. 9 The Cadmus Group, Inc. (212). Demand Impact Model. Prepared for the Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-9

118 Residential Electric Efficiency s HVAC - Down Size ½ Ton Version Date: PY 213 Description Reduction in system size consistent with manual J calculations. Baseline Efficiency The baseline efficiency case is a system that is not sized in accordance with manual J calculation. High Efficiency The high efficiency case is a system that is sized in accordance with manual J calculation. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Completed job (assume downsize 1/2 ton). vember 212 (c) 212 National Grid M-91

119 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Down Size 1/2 ton EnergyStar HVAC 23 (9).295 (9). n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Down Size 1/2 ton EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) Sources 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. 9 RLW Analytics (22). Market Research for the Rhode Island, Massachusetts and Connecticut Residential HVAC Market, December 22, Final Report. Prepared for National Grid, rtheast Utilities, NSTAR, Fitchburg Gas and Electric, and United Illuminating. vember 212 (c) 212 National Grid M-92

120 Residential Electric Efficiency s HVAC - Programmable Thermostats Version Date: PY 213 Description Installation of a programmable thermostat which gives the ability to adjust heating or airconditioning operating times according to a pre-set schedule. Baseline Efficiency The baseline efficiency case is a system without a set back programmable thermostat. High Efficiency The high efficiency case is an HVAC system that has a programmable thermostat installed. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed programmable thermostat. vember 212 (c) 212 National Grid M-93

121 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW Programmable thermostat (electric) EW Programmable thermostat (electric) EW WiFi programmable thermostat (electric) Programmable thermostat (electric) WiFi programmable thermostat with cooling (oil) WiFi programmable thermostat with cooling (gas) Income Eligible MultiFamily 257 (98) EnergyWise MultiFamily 257 (98) EnergyWise MultiFamily 33 (92) EnergyWise 33 (tbd) EnergyStar HVAC 14 (8) EnergyStar HVAC 14 (8).128 (98).128 (98).176 (92).128 (tbd).231 (8).231 (8) (95) 6.6 (95) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) EW Programmable thermostat (electric) EW Programmable thermostat (electric) EW WiFi programmable thermostat (electric) Programmable thermostat (electric) WiFi programmable thermostat with cooling (oil) WiFi programmable thermostat with cooling (gas) Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Income Eligible MultiFamily (56) (98) (98) (98) (9) (9) EnergyWise MultiFamily (56) (98) (98) (98) (9) (9) EnergyWise MultiFamily (56) (98) (98) (98) EnergyWise (56) (98) (98) (98) (9) (9) EnergyStar HVAC (56) (tbd) (tbd) (tbd) EnergyStar HVAC (56) (tbd) (tbd) (tbd) 8 The Cadmus Group, Inc. (211). Memo: Wi-fi Programmable Thermostat Billing Analysis. Prepared for Keith Miller and Whitney Domigan, National Grid. vember 212 (c) 212 National Grid M-94

122 Residential Electric Efficiency s 9 The Cadmus Group, Inc. (212). Demand Impact Model. Prepared for the Massachusetts Program Administrators. 92 The Cadmus Group, Inc. (212). Home Energy Services Impact Evaluation. Prepared for Massachusetts Program Administrators. 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-95

123 Residential Electric Efficiency s HVAC - Quality Installation with Duct Modification Version Date: PY 213 Description 5% reduction in duct leakage from 2% to 1%. This measure may also include duct modifications. Baseline Efficiency The baseline efficiency case is a system with an installation that is inconsistent with manufacturer specifications and may include leaky ducts. High Efficiency The high efficiency case is a system with an installation that is consistent with manufacturer specifications and may have reduced duct leakage. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Completed job vember 212 (c) 212 National Grid M-96

124 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Energy Star QI with Duct Modifications EnergyStar HVAC 513 (9).85 (9). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Energy Star QI with Duct Modifications Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) Sources 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. 9 RLW Analytics (22). Market Research for the Rhode Island, Massachusetts and Connecticut Residential HVAC Market, December 22, Final Report. Prepared for National Grid, rtheast Utilities, NSTAR, Fitchburg Gas and Electric, and United Illuminating. vember 212 (c) 212 National Grid M-97

125 Residential Electric Efficiency s HVAC - Central AC Quality Installation Verification (QIV) Version Date: PY 213 Description The verification of proper charge and airflow during installation of new Central AC system. Baseline Efficiency The baseline efficiency case is a cooling system with SEER = 14.5 and EER = 12 not installed according to manufacturer specifications. High Efficiency The high efficiency case is the same cooling system installed according to manufacturer specifications. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Completed QIV on new AC system vember 212 (c) 212 National Grid M-98

126 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane CoolSmart AC QIV ES EnergyStar HVAC n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp CoolSmart AC QIV ES EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) Sources 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. vember 212 (c) 212 National Grid M-99

127 Residential Electric Efficiency s HVAC - Central AC Digital Check-up/Tune up Version Date: PY 213 Description Tune-up of an existing central AC system. Baseline Efficiency The baseline efficiency case is a standard central air-conditioning system that does not operate according to manufacturer specifications. High Efficiency The high efficiency case is the same baseline system but which operates according to manufacturer specifications. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Completed tune-up of existing AC system vember 212 (c) 212 National Grid M-1

128 Residential Electric Efficiency s Hours The equivalent full load cooling hours are 36 hours per year Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane CoolSmart AC Digital Check-up/Tune-up EnergyStar HVAC n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) CoolSmart AC Digital Check-up/Tune-up Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) Sources 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. vember 212 (c) 212 National Grid M-11

129 Residential Electric Efficiency s HVAC - Central AC Version Date: PY 213 Description The purchase and installation of high efficiency central air-conditioning (CAC) unit rather than a standard CAC system, and/or to replace an existing inefficient CAC system. Baseline Efficiency The baseline efficiency case is a code-compliant central air-conditioning system with SEER = 13 andeer = 11. For early replacement installations, the baseline is a 1-12 year old HVAC unit with SEER =1 and EER = 8.5. High Efficiency The high efficiency case is an ENERGY STAR qualified Central AC system. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Installed high-efficiency central AC system for cooling. vember 212 (c) 212 National Grid M-12

130 Residential Electric Efficiency s Hours The equivalent full load cooling hours are 36 hours per year Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane CoolSmart AC SEER 16. => (Equip) - EER>=13. CoolSmart AC SEER 15. => (Equip) - EER>=12.5 Early Replacement 1-15 yrs, existing SEER 9or1 CS AC SEER =>14.5, EER =>12, NEW Estar - EnergyStar HVAC 187 EnergyStar HVAC 133 EnergyStar HVAC 123 EnergyStar HVAC n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) CoolSmart AC SEER 16. => (Equip) - EER>=13. CoolSmart AC SEER 15. => (Equip) - EER>=12.5 Early Replacement 1-15 yrs, existing SEER 9or1 CS AC SEER =>14.5, EER =>12, NEW Estar - regardless of sizing Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) EnergyStar HVAC (tbd) (tbd) (tbd) (4) (4) EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. vember 212 (c) 212 National Grid M-13

131 Residential Electric Efficiency s HVAC - Right Sizing Version Date: PY 213 Description Documentation that system size is in compliance with manual J calculations. Baseline Efficiency The baseline efficiency case is a system that is not sized in accordance with manual J calculation. High Efficiency The high efficiency case is a system that is sized in accordance with manual J calculation. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Completed job compliant with Manual J sizing vember 212 (c) 212 National Grid M-14

132 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Rightsizing on ES Tier EnergyStar HVAC 123 (9).15 (9). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Rightsizing on ES Tier Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) Sources 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. 9 RLW Analytics (22). Market Research for the Rhode Island, Massachusetts and Connecticut Residential HVAC Market, December 22, Final Report. Prepared for National Grid, rtheast Utilities, NSTAR, Fitchburg Gas and Electric, and United Illuminating. vember 212 (c) 212 National Grid M-15

133 Residential Electric Efficiency s HVAC - ESH Heating, Cooling, and DHW s Version Date: PY 213 Description To capture lost opportunities, encourage the construction of energy-efficient homes, and drive the market to one in which new homes are moving towards net-zero energy. Baseline Efficiency The User Defined Reference Home was revised for 26 as a result of the baseline study completed in 26. High Efficiency The high efficiency case is represented by the specific energy characteristics of each as-built home completed through the program. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Completed ESH heating, cooling, or DHW project. vember 212 (c) 212 National Grid M-16

134 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane ESH Cooling EnergyStar Homes Calc ESH DHW EnergyStar Homes Calc ESH Heating EnergyStar Homes Calc Calc Calc Calc... Calc Calc n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp ESH Cooling EnergyStar Homes ESH DHW EnergyStar Homes ESH Heating EnergyStar Homes Sources vember 212 (c) 212 National Grid M-17

135 Residential Electric Efficiency s HVAC - Deep Energy Retrofit Version Date: PY 213 Description Deep energy retrofit projects for residential new construction include the installation of a new roof, siding, and or the refinishing of a basement. Baseline Efficiency The baseline case is the performance of the house before participation in the program High Efficiency The efficient case is the post-retrofit performance of a house participating the program Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Completed deep energy retrofit project. vember 212 (c) 212 National Grid M-18

136 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane DER Walls (electric) EnergyStar Homes 4,54 (86) DER Roofs (electric) EnergyStar Homes 3,73 (86) DER Basements (electric) EnergyStar Homes 2,638 (86) DER Walls (propane) EnergyStar Homes DER Walls (oil) EnergyStar Homes DER Roofs (propane) EnergyStar Homes DER Roofs (oil) EnergyStar Homes DER Basements (propane) EnergyStar Homes DER Basements (oil) EnergyStar Homes.31 (86).28 (86).2 (86) (86) 39. (86) 27.6 (86) 42.3 (86) 39. (86) 27.6 (86) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp DER Walls (electric) EnergyStar Homes (86) DER Roofs (electric) EnergyStar Homes (86) DER Basements (electric) EnergyStar Homes (86) DER Walls (propane) EnergyStar Homes (86) DER Walls (oil) EnergyStar Homes (86) DER Roofs (propane) EnergyStar Homes (86) DER Roofs (oil) EnergyStar Homes (86) vember 212 (c) 212 National Grid M-19

137 Residential Electric Efficiency s Program Life ISR SPF RRe RRsp RRwp CFsp CFwp DER Basements (propane) EnergyStar Homes (86) DER Basements (oil) EnergyStar Homes (86) Sources 86 NMR Group, Inc., KEMA, The Cadmus Group, Inc., Dorothy Conant (212). Rhode Island 211 Baseline Study of Single-Family Residential New Construction. Prepared for National Grid. vember 212 (c) 212 National Grid M-11

138 Residential Electric Efficiency s HVAC - Air Source Heat Pump Systems Version Date: PY 213 Description The purchase and installation of high efficiency residential heat pump system rather than a standard HVAC system, or to replace an existing inefficient HVAC system. Baseline Efficiency The baseline efficiency case is a residential heat pump with EER = 11, SEER = 13 and HSPF = 7.7. Forearly replacement installations, the baseline is a 1-12 year old HVAC unit with SEER = 1, EER = 8.5and HSPF = 7.. High Efficiency The high efficiency case is an ENERGY STAR qualified air-source heat pump. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Installed high-efficiecny air-source heat pump system for heating. vember 212 (c) 212 National Grid M-111

139 Residential Electric Efficiency s Hours Equivalent full load hours are 12 hours/year for heating and 36 hours/year for cooling. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane CS HP SEER =>14.5 EER =>12 Mini-Split Heat Pump CoolSmart HP SEER 15. => (Equip) CS HP SEER =>14.5, EER =>12, NEW Estar - EnergyStar HVAC 761 EnergyStar HVAC 735 EnergyStar HVAC (12).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) CS HP SEER =>14.5 EER =>12 Mini-Split Heat Pump CoolSmart HP SEER 15. => (Equip) CS HP SEER =>14.5, EER =>12, NEW Estar - regardless of sizing Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (27) (4) (4) EnergyStar HVAC (27) (4) (4) EnergyStar HVAC (27) (4) (4) 12 Sachs, Harvey (23). Energy Savings from Efficient Furnace Air Handlers in Massachusetts. 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. vember 212 (c) 212 National Grid M-112

140 Residential Electric Efficiency s HVAC - Demand Circulators Version Date: PY 213 Description Demand circulators distribute hot water more efficiently by sensing the demand for hot water. Baseline Efficiency The baseline is a system that circulates hot water at a constant volume. High Efficiency The high-efficiency case is a system that circulates hot water efficiently based on the demand. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Complete demand circulator project. vember 212 (c) 212 National Grid M-113

141 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW LI Demand Circulators (electric DHW) EW Demand Circulators (electric DHW) Income Eligible MultiFamily 5,32 (98) EnergyWise MultiFamily 5,32 (98).9 (98).9 (98).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) EW LI Demand Circulators (electric DHW) EW Demand Circulators (electric DHW) Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Income Eligible MultiFamily (tbd) (98) (98) (98) (tbd) (tbd) EnergyWise MultiFamily (tbd) (98) (98) (98) (tbd) (tbd) 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-114

142 Residential Electric Efficiency s HVAC - Weatherization Version Date: PY 213 Description Installation of weatherization measures such as air sealing and insulation in homes heated with electricity, oil, or propane. n-heating electric savings are achieved from reduced fan run time for heating and cooling systems. Baseline Efficiency The baseline efficiency case is any existing home shell measures. High Efficiency The high efficiency case includes increased weatherization insulation levels. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Completed weatherization project. vember 212 (c) 212 National Grid M-115

143 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Weatherization (electric) Weatherization (oil) Single Family Appliance Management Single Family Appliance Management 374 (54) 7 (54) Weatherization (electric) EnergyWise 1,558 (tbd) Weatherization (oil) EnergyWise 336 (tbd) Weatherization (gas) (kwh only) EnergyWise 251 (tbd) (tbd).9 (tbd).9 (tbd) (54) 13.7 (54) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Weatherization (electric) Single Family Appliance (27) (tbd) (tbd) (tbd) (7) (7) Management Weatherization (oil) Single Family Appliance (27) (tbd) (tbd) (tbd) (7) (7) Management Weatherization (electric) EnergyWise (27) (98) (98) (98) (7) (7) Weatherization (oil) EnergyWise (27) (98) (98) (98) (7) (7) Weatherization (gas) (kwh EnergyWise only) (27) (98) (98) (98) (7) (7) Sources 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. 7 Quantec, LLC (2). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-116

144 Residential Electric Efficiency s 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-117

145 Residential Electric Efficiency s HVAC - Window AC (Retrofit) Version Date: PY 213 Description Replacement of existing inefficient room air conditioners with more efficient models. This is only offered as a measure when an AC timer would not reduce usage during the peak period. Baseline Efficiency The baseline efficiency case is the existing air conditioning unit. High Efficiency The high efficiency case is the high efficiency room air conditioning unit. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Replacement of existing window AC with high-efficiency window AC. vember 212 (c) 212 National Grid M-118

146 Residential Electric Efficiency s Hours Equivalent full load hours are 2 hours per year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Window AC Replacements EW LI Window AC Replacement Single Family Appliance Management Income Eligible MultiFamily 1 (2) 24 (98) (98).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Window AC Replacements Single Family Appliance (47) (tbd) (tbd) (tbd) Management EW LI Window AC Income Eligible Replacement MultiFamily (47) (98) (98) (98) Sources 2 Quantec, LLC (25). Evaluation of National Grid s 23 Appliance Management Program: Room Air Conditioning Metering and n-energy Benefits Study. Prepared for National Grid. 37 RLW Analytics (28). Coincidence Factor Study Residential Air Conditioners. Prepared for rtheast Energy Efficiency Partnerships New England Evaluation and State Program Working Group. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-119

147 Residential Electric Efficiency s HVAC - Duct Sealing Version Date: PY 213 Description A 66% reduction in duct leakage from 15% to 5% of supplied CFM. Baseline Efficiency The baseline efficiency case is assumes a 15% leakage. High Efficiency The high efficiency case is a system with duct leakage reduced by 66% to 5% leakage. Sector: Residential End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Complete duct sealing job for existing HVAC system vember 212 (c) 212 National Grid M-12

148 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Duct Sealing - 1 CFM redcution in leaks 2% of EnergyStar HVAC 212 (9).3 (9). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Duct Sealing - 1 CFM redcution in leaks 2% of flow to 1% Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EnergyStar HVAC (27) (tbd) (tbd) (tbd) (4) (4) 4 ADM Associates, Inc. (29). Residential Central AC Regional Evaluation. Prepared for NSTAR, National Grid, Connecticut Light & Power, and United Illuminating. 9 RLW Analytics (22). Market Research for the Rhode Island, Massachusetts and Connecticut Residential HVAC Market, December 22, Final Report. Prepared for National Grid, rtheast Utilities, NSTAR, Fitchburg Gas and Electric, and United Illuminating. vember 212 (c) 212 National Grid M-121

149 Residential Electric Efficiency s Lighting - LED Lighting Version Date: PY 213 Description The installation of Light-Emitting Diode (LED) screw-in bulbs and fixtures. LEDsoffer comparable luminosity to incandescent bulbs at significantly less wattage and significantlylonger lamp lifetimes. Baseline Efficiency The baseline efficiency case is a 65-watt incandescent bulb in a screw-based socket or fluorescent undercabinet light. High Efficiency The high efficiency case is an 18-watt LED downlight. Sector: Residential End Use: Lighting Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Rebated lamp or fixture. vember 212 (c) 212 National Grid M-122

150 Residential Electric Efficiency s Hours The average annual operating hours are 1,22 hours/year (2.8 hours/day * 365 days/year). Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane LED Bulbs LI EW LI LED A Lamp Single Family Appliance Management Income Eligible MultiFamily EW LED A Lamp EnergyWise MultiFamily 41 LED Bulbs (EISA Exempt) EnergyStar Lighting 48 LED A Lamps EnergyStar Lighting 41 LED Fixtures EnergyStar Lighting 44.7 (81) LEDs EnergyStar Homes (81).4 (81).4 (81).47 (81).4 (81).44 (81).47 (81) n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp LED Bulbs LI Single Family Appliance (81) (53) (53) Management EW LI LED A Lamp Income Eligible MultiFamily (81) (53) (53) EW LED A Lamp EnergyWise MultiFamily (81) (53) (53) LED Bulbs (EISA Exempt) EnergyStar Lighting (53) (53) LED A Lamps EnergyStar Lighting (81) (53) (53) LED Fixtures EnergyStar Lighting (81) (53) (53) LEDs EnergyStar Homes (53) (53) vember 212 (c) 212 National Grid M-123

151 Residential Electric Efficiency s Sources 53 Nexus Market Research, RLW Analytics and GDS Associates (29). Residential Lighting Markdown Impact Evaluation. Prepared for Markdown and Buydown Program Sponsors in CT, MA, RI, and VT MA Lighting Worksheet vember 212 (c) 212 National Grid M-124

152 Residential Electric Efficiency s Lighting - MultiFamily Lighting Version Date: PY 213 Description Removal of existing inefficient fixtures/bulbs with the installation of new efficientfixtures/bulbs Baseline Efficiency The baseline efficiency case is the existing fixture and bulbs. High Efficiency The high efficiency case is the new fixture and lamps. Sector: Multifamily End Use: Lighting Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Completed lighting retrofit project. vember 212 (c) 212 National Grid M-125

153 Residential Electric Efficiency s Hours Operating hours are estimated by the vendor for each facility. Typical assumptions are 24 hours/day for common area lighting, 12 hours/day for exterior lighting, and 3 hours/day for inunit lighting, but may be adjusted based on type of housing. Estimates are verified with facility maintenance staff when possible. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW LI LED Fixture EW LI CFLs Income Eligible MultiFamily Income Eligible MultiFamily Calc Calc EW LED Fixtures EnergyWise MultiFamily Calc EW CFLs EnergyWise MultiFamily Calc Calc Calc Calc Calc.... n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EW LI LED Fixture Income Eligible MultiFamily (81) (53) (53) EW LI CFLs Income Eligible MultiFamily (81) (98) (98) (98) (tbd) (tbd) EW LED Fixtures EnergyWise MultiFamily (81) (53) (53) EW CFLs EnergyWise MultiFamily (81) (98) (98) (98) (tbd) (tbd) Sources 53 Nexus Market Research, RLW Analytics and GDS Associates (29). Residential Lighting Markdown Impact Evaluation. Prepared for Markdown and Buydown Program Sponsors in CT, MA, RI, and VT. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-126

154 Residential Electric Efficiency s Lighting - Outdoor Fixtures Version Date: PY 213 Description The installation of hardwired ENERGY STAR fluorescent outdoor fixtures withpin-based bulbs. Savings for this measure are attributable to high efficiency outdoor lightingfixtures and are treated similarly to indoor fixtures. Baseline Efficiency The baseline efficiency case is an incandescent, screw-based fixture with an incandescent bulb. High Efficiency The high efficiency case is an ENERGY STAR fixture wired for exclusive use with a pin based CFLbulb. Sector: Residential End Use: Lighting Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Rebated lamp or fixture. vember 212 (c) 212 National Grid M-127

155 Residential Electric Efficiency s Hours The average annual operating hours are 1,642.5 hours/year (4.5 hours per day * 365 days per year). Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW LI Outdoor Fixtures Income Eligible MultiFamily 27 (98) EW Outdoor Fixtures EnergyWise MultiFamily 133 (98) Outdoor Fixture EnergyStar Lighting (98).41 (98).95 (13)... n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EW LI Outdoor Fixtures Income Eligible MultiFamily (36) (98) (98) (98) EW Outdoor Fixtures EnergyWise MultiFamily (36) (98) (98) (98) Outdoor Fixture EnergyStar Lighting (36) (13) (53) (53) Sources 13 Nexus Market Research and RLW Analytics (24). Impact Evaluation of the MA, RI, and VT 23 Residential Lighting Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont, National Grid, rtheast Ut 53 Nexus Market Research, RLW Analytics and GDS Associates (29). Residential Lighting Markdown Impact Evaluation. Prepared for Markdown and Buydown Program Sponsors in CT, MA, RI, and VT. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-128

156 Residential Electric Efficiency s Lighting - CFL Bulbs Version Date: PY 213 Description Compact fluorescent lamps (CFLs) offer comparable luminosity to incandescent lamps at significantly less wattage and significantly longer lamp lifetimes. Baseline Efficiency The baseline efficiency case is an incandescent bulb. High Efficiency The high efficiency case is an ENERGY STAR rated CFL spiral bulb. Sector: Residential End Use: Lighting Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Rebated lamp or fixture. vember 212 (c) 212 National Grid M-129

157 Residential Electric Efficiency s Hours Average annual operating hours are 1,168 hours/year (3.2 hours/day5 * 365 days) for mail order/coupon bulbs and 1,22 hours/year (2.8 hours/day6 * 365 days/year) for markdown and other retail bulbs. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane CFL Single Family Appliance Management 41 (54) Specialty Bulbs EnergyStar Lighting 49 Screw-in Bulbs EnergyStar Lighting 49 School Program Bulbs EnergyStar Lighting 49 Market Lift EnergyStar Lighting 49 HTR Bulbs EnergyStar Lighting 49 Screw-in Bulbs (EISA Exempt) EnergyStar Lighting 47 CFL EnergyStar Homes (81).48 (81).48 (81).48 (81).48 (81).46 (81).48 (81) n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp CFL Single Family Appliance (tbd) (tbd) (tbd) (tbd) (7) (7) Management Specialty Bulbs EnergyStar Lighting (81) (13) (53) (53) Screw-in Bulbs EnergyStar Lighting (81) (13) (53) (53) School Program Bulbs EnergyStar Lighting (81) (13) (53) (53) Market Lift EnergyStar Lighting (81) (13) (53) (53) HTR Bulbs EnergyStar Lighting (81) (13) (53) (53) Screw-in Bulbs (EISA EnergyStar Lighting Exempt) (81) (13) (53) (53) vember 212 (c) 212 National Grid M-13

158 Residential Electric Efficiency s Program Life ISR SPF RRe RRsp RRwp CFsp CFwp CFL EnergyStar Homes (81) (13) (53) (53) Sources 13 Nexus Market Research and RLW Analytics (24). Impact Evaluation of the MA, RI, and VT 23 Residential Lighting Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont, National Grid, rtheast Ut 53 Nexus Market Research, RLW Analytics and GDS Associates (29). Residential Lighting Markdown Impact Evaluation. Prepared for Markdown and Buydown Program Sponsors in CT, MA, RI, and VT. 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. 7 Quantec, LLC (2). Impact Evaluation: Single-Family EnergyWise Program. Prepared for National Grid MA Lighting Worksheet vember 212 (c) 212 National Grid M-131

159 Residential Electric Efficiency s Lighting - Torchieres Version Date: PY 213 Description The installation of high-efficiency ENERGY STAR torchieres. High efficiencytorchieres use fluorescent in place of halogen or incandescent bulbs to provide comparableluminosity at significantly reduced wattage. Baseline Efficiency The baseline efficiency case is a halogen (or incandescent) torchiere fixture. High Efficiency The high efficiency case is a fluorescent torchiere fixture. Sector: Residential End Use: Lighting Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Rebated lamp or fixture. vember 212 (c) 212 National Grid M-132

160 Residential Electric Efficiency s Hours The average annual operating hours are 1,24.5 hours/year (3.3 hours/day * 365 days/year). Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Torchiere EnergyStar Lighting (13). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Torchiere EnergyStar Lighting (27) (13) (53) (53) Sources 13 Nexus Market Research and RLW Analytics (24). Impact Evaluation of the MA, RI, and VT 23 Residential Lighting Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont, National Grid, rtheast Ut 53 Nexus Market Research, RLW Analytics and GDS Associates (29). Residential Lighting Markdown Impact Evaluation. Prepared for Markdown and Buydown Program Sponsors in CT, MA, RI, and VT. vember 212 (c) 212 National Grid M-133

161 Residential Electric Efficiency s Lighting - Indoor Fixtures Version Date: PY 213 Description The installation of ENERGY STAR compact fluorescent (CFL) indoor fixtures.compact fluorescent fixtures offer comparable luminosity to incandescent fixtures at significantlyless wattage and significantly longer lifetimes. Hardwired fluorescent fixtures offer comparableluminosity to incandescent fixtures at significantly lower wattage and offer significantly longerlifespan. Baseline Efficiency The baseline efficiency case is an incandescent, screw-based fixture with an incandescent lamp. High Efficiency The high efficiency case is an ENERGY STAR qualified compact fluorescent light fixture wired forexclusive use with pin-based CFLs. Sector: Residential End Use: Lighting Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Rebated lamp or fixture. vember 212 (c) 212 National Grid M-134

162 Residential Electric Efficiency s Hours The average annual operating hours are hours/year (2.5 hours/day * 365 days/year). Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane EW LI Fixtures Income Eligible MultiFamily 93 (98) EW Fixtures EnergyWise MultiFamily 12 (98) Indoor Fixture EnergyStar Lighting 19 (81) ESH Fixtures EnergyStar Homes (98).31 (98).16 (81).49 (13).... n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp EW LI Fixtures Income Eligible MultiFamily (81) (98) (98) (98) (tbd) (tbd) EW Fixtures EnergyWise MultiFamily (81) (98) (98) (98) (tbd) (tbd) Indoor Fixture EnergyStar Lighting (81) (13) (53) (53) ESH Fixtures EnergyStar Homes (81) (53) (53) Sources 13 Nexus Market Research and RLW Analytics (24). Impact Evaluation of the MA, RI, and VT 23 Residential Lighting Programs. Submitted to The Cape Light Compact, State of Vermont Public Service Department for Efficiency Vermont, National Grid, rtheast Ut 53 Nexus Market Research, RLW Analytics and GDS Associates (29). Residential Lighting Markdown Impact Evaluation. Prepared for Markdown and Buydown Program Sponsors in CT, MA, RI, and VT MA Lighting Worksheet vember 212 (c) 212 National Grid M-135

163 Residential Electric Efficiency s 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-136

164 Residential Electric Efficiency s Products - Computers Version Date: PY 213 Description Rebates for ENERGY STAR computers. Baseline Efficiency The baseline efficiency case is a conventional computer. High Efficiency The high efficiency case is an ENERGY STAR rated computer. Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Rebated ENERGY STAR computer vember 212 (c) 212 National Grid M-137

165 Residential Electric Efficiency s Hours The operational hours include: 3,322 annual idle hours, 399 annual sleep hours, and 5,39 annual off hours. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Computers EnergyStar Products 77 (55) Top 1 Desktop Computer EnergyStar Products 8 (tbd).9 (#).17 (tbd).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Computers EnergyStar Products (55) Top 1 Desktop Computer EnergyStar Products (55) (9) (9) Sources 55 Environmental Protection Agency (21). Life Cycle Cost Estimate for ENERGY STAR Office Equipment. 9 The Cadmus Group, Inc. (212). Demand Impact Model. Prepared for the Massachusetts Program Administrators. vember 212 (c) 212 National Grid M-138

166 Residential Electric Efficiency s Products - Room Air Cleaners Version Date: PY 213 Description Rebates provided for the purchase of an ENERGY STAR qualified room air cleaner. ENERGY STAR air cleaners are 4% more energy-efficient than standard models. Baseline Efficiency The baseline efficiency case is a conventional unit with clean air delivery rate (CADR) of High Efficiency The high efficiency case is an ENERGY STAR qualified air cleaner with a CADR of Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Rebated ENERGY STAR room air cleaner vember 212 (c) 212 National Grid M-139

167 Residential Electric Efficiency s Hours The savings are based on 8,76 operating hours per year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Room air cleaners EnergyStar Products 268 (46).32 (46). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Room air cleaners EnergyStar Products (46) Sources 46 Environmental Protection Agency (29). Life Cycle Cost Estimate for ENERGY STAR Qualified Room Air Cleaner. vember 212 (c) 212 National Grid M-14

168 Residential Electric Efficiency s Products - Freezer Replacement Version Date: PY 213 Description This measure covers the replacement of an existing inefficient freezer with a new energy efficient model. Baseline Efficiency The baseline efficiency case for both the replaced and baseline new freezer is represented by the existing freezer. It is assumed that low-income customers would replace their freezers with a used inefficient unit. High Efficiency The high efficiency case is a new high efficiency freezer. Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Installed high-efficiency freezer. vember 212 (c) 212 National Grid M-141

169 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Replacement Freezer Single Family Appliance Management 637 (54).84. n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Replacement Freezer Single Family Appliance Management (tbd) (tbd) (tbd) Sources 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-142

170 Residential Electric Efficiency s Products - Smart Strips Version Date: PY 213 Description Switches off plug load using current sensors and switching devices which turn off plug load when electrical current drops below threshold low levels. Smart Strips can be used on electrical home appliances or in the workplace. Baseline Efficiency The baseline efficiency case is the absence power strip and leaving peripheral devices plugged in or using a power surge protector and leaving peripheral devices on High Efficiency The high efficiency case is plugging peripheral devices into a Smart Strip Energy Efficient Power Bar Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Rebated smart strip. vember 212 (c) 212 National Grid M-143

171 Residential Electric Efficiency s Hours Since the power strip is assumed to be plugged in all year, the savings are based on 8,76 operational hours per year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Smart strips EW LI Smart Strips Single Family Appliance Management Income Eligible MultiFamily 79 (41) 79 (41) EW Smart Strips EnergyWise MultiFamily 79 (41) Smart Strips EnergyStar Products 79 (41) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Smart strips Single Family Appliance (98) Management EW LI Smart Strips Income Eligible MultiFamily (98) (98) (98) (98) (98) (98) EW Smart Strips EnergyWise MultiFamily (98) (98) (98) (98) (98) (98) Smart Strips EnergyStar Products (98) Sources 41 ECOS 29 Smart Plug Strips: Draft Report. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-144

172 Residential Electric Efficiency s Products - Refrigerators Version Date: PY 213 Description Rebates for purchase of ENERGY STAR qualified refrigerators rather then nonqualified models. ENERGY STAR qualified refrigerators use at least 2% less energy than new, nonqualified models. Baseline Efficiency The baseline efficiency case is a residential refrigerator that meets the Federal minimum standard for energy efficiency. High Efficiency The high efficiency case is an ENERGY STAR residential refrigerator that uses 2% less energy than models not labeled with the ENERGY STAR logo. Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Installed high-efficiency refrigerator. vember 212 (c) 212 National Grid M-145

173 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Appliance Removal Single Family Appliance Management 1,321 (54) Refrigerators EnergyStar Products 17 (45) Top 1 Refrigerator EnergyStar Products 154 (tbd) Refrigerators EnergyStar Homes (tbd) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Appliance Removal Single Family Appliance (tbd) (tbd) (tbd) Management Refrigerators EnergyStar Products (45) Top 1 Refrigerator EnergyStar Products (45) Refrigerators EnergyStar Homes (45) Sources 45 Environmental Protection Agency (29). Life Cycle Cost Estimate for ENERGY STAR Qualified Residential Refrigerator. 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-146

174 Residential Electric Efficiency s Products - Refrigerator/Freezer Removal Version Date: PY 213 Description The retirement of old, inefficient secondary refrigerators and freezers. Baseline Efficiency The baseline efficiency case is an old, inefficient secondary working refrigerator or freezer. Estimated average usage is based on combined weight of freezer energy use and refrigerator energy use. High Efficiency The high efficiency case assumes no replacement of secondary unit. Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Removal of existing refrigerator or freezer. vember 212 (c) 212 National Grid M-147

175 Residential Electric Efficiency s Hours Refrigerator and freezer operating hours are 8,76 hours/year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Refrigerator Recycle secondary replaced EnergyStar Products 716 (tbd) Freezer Recycling EnergyStar Products 66 (tbd).85 (tbd).8 (tbd).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Refrigerator Recycle EnergyStar Products secondary replaced (59) Freezer Recycling EnergyStar Products (59) Sources vember 212 (c) 212 National Grid M-148

176 Residential Electric Efficiency s Products - Refrigerator Replacement Version Date: PY 213 Description This measure covers the replacement of an existing inefficient refrigerator with a new ENERGY STAR rated refrigerator. ENERGY STAR qualified refrigerators use at least 2% less energy than non-qualified models. Baseline Efficiency The baseline efficiency case is the existing refrigerator. It is assumed that low-income customers would otherwise replace their refrigerators with a used inefficient unit. High Efficiency The high efficiency case is an ENERGY STAR rated refrigerator that meets the ENERGY STAR criteria for full-sized refrigerators (7.75 cubic feet), using at least 2% less energy than models meeting the minimum Federal government standard. Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Installed high-efficiency refrigerator. vember 212 (c) 212 National Grid M-149

177 Residential Electric Efficiency s Hours Refrigerator and freezer operating hours are 8,76 hours/year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Replacement Refrigerator EW LI Refrigerator Single Family Appliance Management Income Eligible MultiFamily 1,122 (54) 186 (98) EW Refrigerator EnergyWise MultiFamily 317 (98) (98).41 (98)... n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Replacement Refrigerator Single Family Appliance (tbd) (tbd) (tbd) Management EW LI Refrigerator Income Eligible MultiFamily (45) (98) (98) (98) EW Refrigerator EnergyWise MultiFamily (45) (98) (98) (98) Sources 54 The Cadmus Group, Inc. (29). Impact Evaluation of the 27 Appliance Management Program and Low Income Weatherization Program. Prepared for National Grid. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-15

178 Residential Electric Efficiency s Products - Pool Pumps Version Date: PY 213 Description The installation of a 2-speed or variable speed drive pool pump. Operating a pool pump for a longer period of time at a lower wattage can move the same amount of water using significantly less energy. Baseline Efficiency The baseline efficiency case is a single speed pump. High Efficiency The high efficiency case is a 2-speed or variable speed pump. Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Installed efficient pool pump. vember 212 (c) 212 National Grid M-151

179 Residential Electric Efficiency s Hours Hours are considered on a case-by-case basis since they are dependent on seasonal factors, pool size, and treatment conditions. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Pool pump (variable) EnergyStar Products 837 (34) Pool pump (2-speed) EnergyStar Products 4 (62) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Pool pump (variable) EnergyStar Products (34) Pool pump (2-speed) EnergyStar Products (34) Sources 34 Davis Energy Group (28). Proposal Information Template for Residential Pool Pump Revisions. Prepared for Pacific Gas and Electric Company. 62 Pacific Gas & Electric Company. The Multi-Speed Pool Pump Fact Sheet. vember 212 (c) 212 National Grid M-152

180 Residential Electric Efficiency s Products - Freezers Version Date: PY 213 Description Rebates provided for the purchase of ENERGY STAR freezers. ENERGY STAR qualified freezers use at least 1% less energy than new, non-qualified models and return even greater savings compared to old models. Baseline Efficiency The baseline efficiency case is a residential freezer that meets the Federal minimum standard for energy efficiency. High Efficiency The high efficiency case is based on an ENERGY STAR rated freezer that uses 1% less energy than models not labeled with the ENERGY STAR logo. Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with deemed inputs Unit = Installed high-efficiency freezer. vember 212 (c) 212 National Grid M-153

181 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Freezers EnergyStar Products 49 (82) Top 1 Freezer EnergyStar Products 14 (tbd).6.17 (tbd).. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Freezers EnergyStar Products (45) Top 1 Freezer EnergyStar Products (7) Sources 82 Environmental Protection Agency (212). Freezers Qualified Product List. July 18, 212. Average of all units in category. vember 212 (c) 212 National Grid M-154

182 Residential Electric Efficiency s Products - Computer Monitors Version Date: PY 213 Description Rebates for ENERGY STAR qualified computer monitors. Baseline Efficiency The baseline efficiency case is a conventional computer monitor. High Efficiency The high efficiency case is an ENERGY STAR rated LCD monitor. Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Rebated ENERGY STAR computer monitor vember 212 (c) 212 National Grid M-155

183 Residential Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Monitors EnergyStar Products 35 (33).1. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Monitors EnergyStar Products (33) Sources 33 Consortium for Energy Efficiency (28). Consumer Electronics Program Guide: Information on Voluntary Approaches for the Promotion of Energy Efficient Consumer Electronics - Products and Practices. vember 212 (c) 212 National Grid M-156

184 Residential Electric Efficiency s Products - Televisions Version Date: PY 213 Description Rebates for televisions that meet ENERGY STAR version 5.3 specifications. Baseline Efficiency The baseline efficiency case is a standard television. High Efficiency The high efficiency case is an ENERGY STAR version 5.3 qualified television; including a subset of televisions that are both ENERGY STAR rated and included in the Top Ten USA ranking. Sector: Residential End Use: Products Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Rebated television. vember 212 (c) 212 National Grid M-157

185 Residential Electric Efficiency s Hours Since the TV is assumed to be plugged in all year, the savings are based on 8,76 operational hours per year. The weighted savings are based on 5 hours on and 19 hours standby each day. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Top 1 TV >32" and <46" EnergyStar Products 213 (83) Top 1 TV >=46" EnergyStar Products 339 (83) ENERGY STAR 5.3 TV >35" and <5" ENERGY STAR 5.3 TV >=5" ENERGY STAR 5.3 TV <35" EnergyStar Products 161 (83) EnergyStar Products 288 (83) EnergyStar Products 87 (83) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Top 1 TV >32" and <46" EnergyStar Products (48) (9) (9) Top 1 TV >=46" EnergyStar Products (48) (9) (9) ENERGY STAR 5.3 TV >35" and <5" ENERGY STAR 5.3 TV >=5" ENERGY STAR 5.3 TV <35" Sources EnergyStar Products (48) (9) (9) EnergyStar Products (48) (9) (9) EnergyStar Products (48) (9) (9) 48 Environmental Protection Agency (29). Life Cycle Cost Estimate for ENERGY STAR Television. 83 Environmental Protection Agency (212). Savings Calculator for ENERGY STAR Qualified Consumer Electronics. vember 212 (c) 212 National Grid M-158

186 Residential Electric Efficiency s 9 The Cadmus Group, Inc. (212). Demand Impact Model. Prepared for the Massachusetts Program Administrators. vember 212 (c) 212 National Grid M-159

187 Characterizations C&I Natural Gas Efficiency s vember National Grid

188 Commercial Gas Efficiency s Food Service - Commercial Steamer Version Date: PY 213 Description The installation of an ENERGY STAR rated natural-gas fired steamer, either connectionless or steam-generator design, with heavy-load cooking efficiency of at least 38%. Qualified steamers reduce heat loss due to better insulation, improved heat exchange, and more efficient steam delivery systems. Baseline Efficiency The baseline efficiency case is a typical boiler-based steamer with the following operating parameters: cooking energy efficiency = 18%, production capacity per pan = 23.3 lbs/hr, preheat energy rate = 72, Btu/hr, idle energy rate = 18, Btu/h, and average water use = 4 gallons/hr. High Efficiency The high efficiency case is an ENERGY STAR qualified gas-fired steamer with the following operating parameters: cooking energy efficiency = 38%, production capacity per pan = 2 lbs/hr, preheat energy rate = 36, Btu/hr, idle energy rate = 12,5 Btu/h, and average water use = 3 gallons/hr. Sector: C&I End Use: Food Service Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency gas-fired steamer. vember 212 (c) 212 National Grid M-16

189 Commercial Gas Efficiency s Hours The deemed savings assumes 4,38 annual operating hours (12 hours a day * 365 days/year). Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Commercial gas steamer (>= 38% efficiency) Commercial New Construction (65) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Commercial gas steamer (>= 38% efficiency) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial New Construction (65) Sources 65 Environmental Protection Agency (211). Savings Calculator for ENERGY STAR Qualified Commercial Kitchen Equipment: Steam Cooker Calcs. Accessed on 1/12/211. vember 212 (c) 212 National Grid M-161

190 Commercial Gas Efficiency s Food Service - Commercial Griddle Version Date: PY 213 Description Installation of a high efficiency gas-fired griddle. Baseline Efficiency The baseline efficiency case is a standard efficiency (3% efficient) gas griddle. High Efficiency The high efficiency case is a gas griddle with an efficiency of 38%. Sector: C&I End Use: Food Service Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency gas-fired griddle vember 212 (c) 212 National Grid M-162

191 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Commercial gas griddle Commercial New Construction (69) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial gas griddle Commercial New Construction (69) Sources 69 Food Service Technology Center (211). Gas Griddle Life-Cycle Cost Calculator. Accessed on 1/12/211. vember 212 (c) 212 National Grid M-163

192 Commercial Gas Efficiency s Food Service - Commercial Gas-Fired Ovens Version Date: PY 213 Description Installation of high efficiency gas-fired ovens. Baseline Efficiency The baseline efficiency case is a standard oven that meets the baseline cooking energy efficiency requirement. High Efficiency The high efficiency case is an oven that meets or exceeds the minimum high efficiency ratings. Sector: C&I End Use: Food Service Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency gas-fired oven. vember 212 (c) 212 National Grid M-164

193 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Gas-fired rack oven (>= 5% efficiency) Gas-fired conveyer oven (>= 44% efficiency) Gas-fired convection oven (>= 44% efficiency) Gas-fired combination oven (>= 44% efficiency) Commercial New Construction Commercial New Construction Commercial New Construction Commercial New Construction (68) 84.5 (68) 3.6 (84) 11. (67) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Gas-fired rack oven (>= 5% efficiency) Gas-fired conveyer oven (>= 44% efficiency) Gas-fired convection oven (>= 44% efficiency) Gas-fired combination oven (>= 44% efficiency) Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial New Construction (68) Commercial New Construction (68) Commercial New Construction (84) Commercial New Construction (67) 67 Food Service Technology Center (211). Gas Combination Oven Life-Cycle Cost Calculator. 68 Food Service Technology Center (211). Gas Conveyor Oven Life-Cycle Cost Calculator. 84 Food Service Technology Center (212). Gas Convection Oven Life-Cycle Cost Calculator. vember 212 (c) 212 National Grid M-165

194 Commercial Gas Efficiency s Food Service - Commercial Fryer Version Date: PY 213 Description The installation of a natural-gas fired fryer that is either ENERGY STAR rated or has a heavy-load cooking efficiency of at least 5%. Qualified fryers use advanced burner and heat exchanger designs to use fuel more efficiently, as well as increased insulation to reduce standby heat loss. Baseline Efficiency The baseline efficiency case is a typical low-efficiency gas-fired fryer with 35% cooking efficiency, 16, Btu preheat energy, 14, Btu/h Idle Energy Rate, 6 lbs/h production capacity. High Efficiency The high efficiency case is a high efficiency gas-fired fryer with a 55% cooking efficiency, and Idle Energy Rate are site-specific and can 15,5 Btu preheat energy, 8,5 Btu/h Idle Energy Rate, and 65 lbs/hr production capacity. To simplify the savings algorithm, typical values for food load (15 lbs/day) and preheat energy (15,5 Btu) are assumed. Sector: C&I End Use: Food Service Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency gas-fired fryer. vember 212 (c) 212 National Grid M-166

195 Commercial Gas Efficiency s Hours The fryer is assumed to operate 5,84 hours per year (16 hours per day, 365 days per year). Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Commercial gas fryer Commercial New Construction (43) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial gas fryer Commercial New Construction (43) Sources 43 Environmental Protection Agency (29). Life Cycle Cost Estimate for ENERGY STAR Qualified Gas Fryer. vember 212 (c) 212 National Grid M-167

196 Commercial Gas Efficiency s Hot Water - Water Heaters Version Date: PY 213 Description The installation of a high-efficiency water heaters. Indirect water heaters use a storage tank that is heated by the main boiler. The energy stored by the water tank allows the boiler to turn off and on less often, saving considerable energy. Tankless water heaters circulate water through a heat exchanger to be heated for immediate use, eliminating the standby heat loss associated with a storage tank. Baseline Efficiency The baseline efficiency case assumes compliance with the efficiency requirements as mandated by Rhode Island State Building Code. For condensing stand-alone water heaters, the baseline is a stand-alone tank water heater with a thermal efficiency of 8%. For indirect and tankless water heaters, the baseline is a code compliant gas-fired storage water heater with an Energy Factor of.59. High Efficiency The high efficiency case is a water heater that exceeds the efficiency of the comparable baseline unit.high efficiency requirements for each type of equipment are described in the program rebate forms. Sector: C&I End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency water heater. vember 212 (c) 212 National Grid M-168

197 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane On-demand tankless water heater (EF>=.95) On-demand tankless water heater (EF>=.82) Indirect water heater (EF >=.82, CAE >= 85%) Condensing stand-alone water heater (75-3 MBH) Commercial New Construction Commercial New Construction Commercial New Construction Commercial New Construction (49) 7.1 (49) 2.7 (85) 25. (49) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) On-demand tankless water heater (EF>=.95) On-demand tankless water heater (EF>=.82) Indirect water heater (EF >=.82, CAE >= 85%) Condensing stand-alone water heater (75-3 MBH) (TE >=.95) Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial New Construction (49) Commercial New Construction Commercial New Construction Commercial New Construction 2 (49) 15 (49) 15 (49) GDS Associates, Inc. and Summit Blue Consulting (29). Natural Gas Energy Efficiency Potential in Massachusetts. Prepared for GasNetworks. vember 212 (c) 212 National Grid M-169

198 Commercial Gas Efficiency s 85 KEMA (212). Prescriptive Gas Program Final Evaluation Report. Prepared for Massachusetts Energy Efficiency Program Administrators. vember 212 (c) 212 National Grid M-17

199 Commercial Gas Efficiency s Hot Water - Faucet Aerators Version Date: PY 213 Description Installation of a faucet aerator with a flow rate of 1.5 GPM or less on an existing faucet with high flow in a commercial setting with service water heated by natural gas. Baseline Efficiency The baseline efficiency case is a 2.2 GPM faucet. High Efficiency The high efficiency case is a faucet with 1.5 GPM or less aerator installed. Sector: C&I End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed faucet aerator. vember 212 (c) 212 National Grid M-171

200 Commercial Gas Efficiency s Hours The savings estimates for this measure are determined empirically in terms of units installed and so the equivalent heating full load hours are not directly used, however, the calculator used to determine the deemed savings uses a default operation of 3 minutes a day, 26 days a year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Faucet aerator Commercial and Industrial MultiFamily Faucet aerator Direct Install...36 (95) 1.7 (57) n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Faucet aerator Commercial and Industrial MultiFamily (95) (98) Faucet aerator Direct Install (57) Sources 57 Federal Energy Management Program (21). Energy Cost Calculator for Faucets and Showerheads. Accessed on 1/12/ The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-172

201 Commercial Gas Efficiency s Hot Water - Low-Flow Showerheads Version Date: PY 213 Description Installation of a low flow showerhead with a flow rate of 1.5 GPM or less in a commercial setting with service water heated by natural gas. Baseline Efficiency The baseline efficiency case is a 2.5 GPM showerhead. High Efficiency The high efficiency case is a 1.5 GPM showerhead. Sector: C&I End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed low-flow showerhead vember 212 (c) 212 National Grid M-173

202 Commercial Gas Efficiency s Hours The savings estimates for this measure are determined empirically in terms of units installed and so the equivalent heating full load hours are not directly used, however, the calculator used to determine the deemed savings uses a default operation of 2 minutes a day, 365 days a year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Low-flow showerhead Direct Install Low-flow showerhead Commercial and Industrial MultiFamily (57).48 (95) n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Low-flow showerhead Direct Install (57) Low-flow showerhead Commercial and Industrial MultiFamily (95) (98) Sources 57 Federal Energy Management Program (21). Energy Cost Calculator for Faucets and Showerheads. Accessed on 1/12/ The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-174

203 Commercial Gas Efficiency s Hot Water - Pre-Rinse Spray Valves Version Date: PY 213 Description Retrofitting existing standard spray nozzles in locations where service water is supplied by natural gas fired hot water heater with new low flow pre-rinse spray nozzles with an average flow rate of 1.6 GPM. Baseline Efficiency The baseline efficiency case is a standard efficiency spray valve. High Efficiency The high efficiency case is a low flow pre-rinse spray valve with an average flow rate of 1.6 GPM. Sector: C&I End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed pre-rinse spray valve. vember 212 (c) 212 National Grid M-175

204 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Pre-rinse spray valve Direct Install Pre-rinse spray valve Commercial Retrofit (16) 33.6 (16) n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Pre-rinse spray valve Direct Install (22) Pre-rinse spray valve Commercial Retrofit (22) Sources 16 SBW Consulting (24). EM&V Report for the CUWCC Pre-Rinse Spray Head Distribution Program. Prepared for the California Urban Water Conservation Council. vember 212 (c) 212 National Grid M-176

205 Commercial Gas Efficiency s Hot Water - Steam Traps Version Date: PY 213 Description Repair or replace malfunctioning steam traps. Baseline Efficiency The baseline efficiency case is a failed steam trap. High Efficiency The high efficiency case is a repaired or replaced steam trap. Sector: C&I End Use: Hot Water Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Repaired or replaced steam trap. vember 212 (c) 212 National Grid M-177

206 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Steam trap Direct Install n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Steam trap Direct Install Sources vember 212 (c) 212 National Grid M-178

207 Commercial Gas Efficiency s HVAC - Demand Circulators Version Date: PY 213 Description Demand circulators distribute hot water more efficiently by sensing the demand for hot water. Baseline Efficiency The baseline is a system that circulates hot water at a constant volume. High Efficiency The high-efficiency case is a system that circulates hot water efficiently based on the demand. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Complete demand circulator project. vember 212 (c) 212 National Grid M-179

208 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Demand circulator Commercial and Industrial MultiFamily 96 (95).16 (95) 195. (95) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Demand circulator Commercial and Industrial MultiFamily (95) (98) (98) (98) (tbd) (tbd) Sources 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. 98 The Cadmus Group, Inc. (212). Rhode Island EnergyWise Single Family Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-18

209 Commercial Gas Efficiency s HVAC - Building Operator Certification Version Date: PY 213 Description Class improves a building operator's ability to optimize facility gas and electricty utilization. Baseline Efficiency The baseline efficiency case is a building operator not attending a class on improving the efficiency of facility gas and electricit use High Efficiency The high efficiency case is a building operator attending a class on improving the efficiency of facility gas and electricity use. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Course completion by building operator vember 212 (c) 212 National Grid M-181

210 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Building operator certification Commercial Retrofit 22,273 (21) (21) n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Building operator certification Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial Retrofit (21) Sources 21 RLW Analytics (25). Impact and Process Evaluation Building Operator Training and Certification (BOC) Program. Prepared for NEEP. vember 212 (c) 212 National Grid M-182

211 Commercial Gas Efficiency s HVAC - Condensing Unit Heater Version Date: PY 213 Description Installation of a condensing gas-fired unit heater for space heating with capacity up to 3 MBH and minimum combustion efficiency of 9%. Baseline Efficiency The baseline efficiency case is a standard efficiency unit heater. High Efficiency The high efficiency case is a high-efficiency condensing unit heater. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed condensing unit heater. vember 212 (c) 212 National Grid M-183

212 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Condensing Unit heater Commercial New Construction. 4.9 (77) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Condensing Unit heater Commercial New Construction (11) Sources 77 NYSERDA Deemed Savings Database (Rev 11). vember 212 (c) 212 National Grid M-184

213 Commercial Gas Efficiency s HVAC - Boilers Version Date: PY 213 Description The installation of a high efficiency natural gas fired condensing boilers. High efficiency boilers take advantage of improved design, sealed combustion and condensing flue gases in a second heat exchanger to achieve improved efficiency. (Only condensing boilers are offered as prescriptive measures. Program incentives for other boiler types are offered through the custom program.) Baseline Efficiency The baseline efficiency assumes compliance with the efficiency requirements as mandated by Rhode Island State Building Code. The deemed savings methodology for this measure does not require specific baseline data, but the baseline information is provided for reference. As described in Chapter 13 of the Rhode Island State Building Code, energy efficiency must be met via compliance with the International Energy Conservation Code (IECC) 29. Table 13 details the specific efficiency requirements by equipment type and capacity. High Efficiency The high efficiency case assumes a gas-fired boiler that exceeds the efficiency levels required by Rhode Island State Building Code. Actual site efficiencies should be determined on a caseby-case basis. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency condensing boiler vember 212 (c) 212 National Grid M-185

214 Commercial Gas Efficiency s Hours Reference Tables Table 13: Baseline Efficiency Requirements for Gas Boilers in Appendix A: Common Look-up Tables. Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Condensing boiler MBH Condensing boiler MBH Condensing boiler 171+ MBH Condensing boiler 1-17 MBH Condensing boiler <= 3 MBH Commercial New Construction Commercial New Construction Commercial New Construction Commercial New Construction Commercial New Construction (85) 56.1 (85) (85) (85) 22.8 (97) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Condensing boiler MBH Condensing boiler MBH Condensing boiler 171+ MBH Condensing boiler 1-17 MBH Condensing boiler <= 3 MBH Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial New Construction (49) Commercial New Construction Commercial New Construction Commercial New Construction Commercial New Construction 25 (49) 25 (49) 25 (49) 25 (49) vember 212 (c) 212 National Grid M-186

215 Commercial Gas Efficiency s Sources 85 KEMA (212). Prescriptive Gas Program Final Evaluation Report. Prepared for Massachusetts Energy Efficiency Program Administrators. 97 The Cadmus Group, Inc. (212). Memo to HEHE Program Administrators Re: Impacts of Upcoming Federal Standards on HEHE Gas Space and Water Heating s. June 8, 212. vember 212 (c) 212 National Grid M-187

216 Commercial Gas Efficiency s HVAC - EW Other Insulation Version Date: PY 213 Description Insulation upgrades (other than basement, roofs, and walls) applied in existing facilities. Baseline Efficiency The baseline efficiency case is the existing facility or equipment prior to the implementation of additional insulation. High Efficiency The high efficiency case is the existing facility or equipment after the implementation of additional insulation. Sector: Multifamily End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Completed insulation project. vember 212 (c) 212 National Grid M-188

217 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane MF Other Insulation - Existing Hatches: MF Other Insulation - attic staircase cover (therma- Commercial and Industrial MultiFamily Commercial and Industrial MultiFamily (95) 3.2 (95) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) MF Other Insulation - Existing Hatches: weaatherstrip, insulate, dam perimeter MF Other Insulation - attic staircase cover (thermadome) Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial and Industrial MultiFamily (95) Commercial and Industrial MultiFamily 25 (95) The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. vember 212 (c) 212 National Grid M-189

218 Commercial Gas Efficiency s HVAC - EW Shell Insulation Version Date: PY 213 Description Shell insulation upgrades applied in existing facilities including improved insulation in attics, basements and sidewalls. Baseline Efficiency The baseline efficiency case is characterized by the total R-value of the existing attic, basement or sidewall (RBASE). This is calculated as the R-value of the existing insulation, estimated by the program contractor, plus the R-value of the ceiling, floor, or wall (for all projects: RCEILING = 3.36; RFLOOR = 6.16; RWALL = 6.65). High Efficiency The high efficiency case is characterized by the total R-value of the attic after the installation of additional attic, basement or sidewall insulation. This is calculated as the sum of the existing Rvalue (RBASE) plus the R-value of the added insulation (RADD). Sector: Multifamily End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Completed insulation project. vember 212 (c) 212 National Grid M-19

219 Commercial Gas Efficiency s Hours Heating hours are characterized by the heating degree days for the facility. The total heating degree days for residential buildings in Rhode Island is assumed to be This value is an average BASE 6 Annual Heating Degree Day values for weather stations in Rhode Island and southeastern Massachusetts based on NOAA 3-year weather data. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane MF Shell Insulation Commercial and Industrial MultiFamily. 3.2 (95) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp MF Shell Insulation Commercial and Industrial MultiFamily (95) Sources 1 NOAA 3-year weather data. 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. vember 212 (c) 212 National Grid M-191

220 Commercial Gas Efficiency s HVAC - Furnaces Version Date: PY 213 Description The installation of a high efficiency natural gas warm air furnace with an electronically commutated motor (ECM) for the fan. High efficiency furnaces are better at converting fuel into direct heat and better insulated to reduce heat loss. ECM fan motors significantly reduce fan motor electric consumption as compared to both shaped-pole and permanent split capacitor motors. Baseline Efficiency The baseline efficiency case is a 9% AFUE furnace in the <15 kbtuh size category. High Efficiency The high efficiency case is a new furnace with AFUE >= 95% and an electronically commutated motor. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency warm air furnace with ECM fan motor vember 212 (c) 212 National Grid M-192

221 Commercial Gas Efficiency s Hours Reference Tables Table 14: Baseline Efficiency Requirements for Gas Furnaces in Appendix A: Common Lookup Tables. Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Furnace 97+ AFUE (<15) w/ecm Motor Furnace 95+ AFUE (<15) w/ecm Motor Commercial New Construction Commercial New Construction 44 (79) 44 (79) (97) 4.2 (97) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Furnace 97+ AFUE (<15) w/ecm Motor Furnace 95+ AFUE (<15) w/ecm Motor Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial New Construction (49) Commercial New Construction 18 (49) The Cadmus Group, Inc. (211). MEMO: BFM Initial Results. Prepared for Gail Azulay, NSTAR and Bob Wirtshafter, EEAC. 97 The Cadmus Group, Inc. (212). Memo to HEHE Program Administrators Re: Impacts of Upcoming Federal Standards on HEHE Gas Space and Water Heating s. June 8, 212. vember 212 (c) 212 National Grid M-193

222 Commercial Gas Efficiency s HVAC - Heating System Replacement Version Date: PY 213 Description Replacement of an existing gas heating system with a new high efficiency system.electric savings are achieved from reduced run time of the heating system fan(s). Baseline Efficiency The baseline efficiency case is the existing natural gas heating system. High Efficiency The high efficiency case is a high-efficiency natural gas heating system. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency natural gas heating system. vember 212 (c) 212 National Grid M-194

223 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane MF Heating System Replacement Commercial and Industrial MultiFamily. Calc n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) MF Heating System Replacement Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial and Industrial MultiFamily (44) Sources vember 212 (c) 212 National Grid M-195

224 Commercial Gas Efficiency s HVAC - Infrared Heater Version Date: PY 213 Description Electric savings are achieved from reduced run time of the heating system fan(s). Baseline Efficiency The baseline efficiency case is a standard efficiency gas-fired unit heater with combustion efficiency of 8%. High Efficiency The high efficiency case is a gas-fired low-intensity infrared heating unit. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed infrared heater vember 212 (c) 212 National Grid M-196

225 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Infrared heater Commercial New Construction (85) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Infrared heater Commercial New Construction (25) Sources 85 KEMA (212). Prescriptive Gas Program Final Evaluation Report. Prepared for Massachusetts Energy Efficiency Program Administrators. vember 212 (c) 212 National Grid M-197

226 Commercial Gas Efficiency s HVAC - Integrated Boiler/Water Heater Version Date: PY 213 Description This measure promotes the installation of a combined high-efficiency boiler and water heating unit. Combined boiler and water heating systems are more efficient than separate systems because they eliminate the standby heat losses of an additional tank. Baseline Efficiency The baseline efficiency case is an 8% AFUE boiler with a.594 EF water heater. High Efficiency The high efficiency case is a condensing, integrated water heater/boiler with an AFUE >= 9%. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high efficiency integrated boiler/water heater unit. vember 212 (c) 212 National Grid M-198

227 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Integrated water heater/condensing boiler (EF Commercial New Construction (49) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Integrated water heater/condensing boiler (EF.9; AFUE 9%) Sources Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial New Construction (1) 49 GDS Associates, Inc. and Summit Blue Consulting (29). Natural Gas Energy Efficiency Potential in Massachusetts. Prepared for GasNetworks. vember 212 (c) 212 National Grid M-199

228 Commercial Gas Efficiency s HVAC - Programmable Thermostats Version Date: PY 213 Description Installation of programmable thermostats with the ability to adjust heating or air-conditioning operating times according to a pre-set schedule to meet occupancy needs and minimize redundant HVAC operation. Baseline Efficiency The baseline efficiency case is an HVAC system using natural gas to provide space heating without a programmable thermostat. High Efficiency The high efficiency case is an HVAC system using natural gas to provide space heating with a programmable thermostat installed. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed programmable thermostat vember 212 (c) 212 National Grid M-2

229 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Programmable thermostat Direct Install Programmable thermostat Commercial Retrofit (32) 7.7 (32) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Programmable thermostat Direct Install (56) Programmable thermostat Commercial Retrofit (56) Sources 32 RLW Analytics (27). Validating the Impacts of Programmable Thermostats. Prepared for GasNetworks. vember 212 (c) 212 National Grid M-21

230 Commercial Gas Efficiency s HVAC - Boiler Controls Version Date: PY 213 Description Boiler reset controls are devices that automatically control boiler water temperature based on outdoor temperature using a software program. Baseline Efficiency The baseline efficiency case is a boiler without reset controls. High Efficiency The high efficiency case is a boiler with reset controls. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Boiler reset control installed on existing boiler. vember 212 (c) 212 National Grid M-22

231 Commercial Gas Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Boiler reset control (multistage) Commercial Retrofit (49) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Boiler reset control (multistage) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial Retrofit (23) Sources 49 GDS Associates, Inc. and Summit Blue Consulting (29). Natural Gas Energy Efficiency Potential in Massachusetts. Prepared for GasNetworks. vember 212 (c) 212 National Grid M-23

232 Commercial Gas Efficiency s HVAC - EW Air Sealing Version Date: PY 213 Description Thermal shell air leaks are sealed through strategic use and location of air-tight materials. Baseline Efficiency The baseline efficiency case is the existing building before the air sealing measure is implemented. The baseline building is characterized by the existing CFM5 measurement (CFM5PRE) for single family homes, or the existing air changes per hour (ACHPRE) for multi-family facilities, which is measured prior to the implementation of the air sealing measure. High Efficiency The high efficiency case is the existing building after the air sealing measure is implemented. The high efficiency building is characterized by the new CFM5 measurement for single family homes (CFM5POST), or the new air changes per hour (ACHPOST) for multi-family facilities, which is measured after the air sealing measure is implemented. Sector: Multifamily End Use: HVAC Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Completed air sealing project. vember 212 (c) 212 National Grid M-24

233 Commercial Gas Efficiency s Hours Heating hours are characterized by the heating degree days for the facility. The total heating degree days for residential buildings in Rhode Island is assumed to be This value is an average BASE 6 Annual Heating Degree Day values for weather stations in Rhode Island and southeastern Massachusetts based on NOAA 3-year weather data. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane MF Air Sealing Commercial and Industrial MultiFamily. 2.1 (95) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp MF Air Sealing Commercial and Industrial MultiFamily (27) Sources 1 NOAA 3-year weather data. 95 The Cadmus Group, Inc. (212). Massachusetts 211 Residential Retrofit Multifamily Program Impact Analysis. Prepared for Massachusetts Program Administrators. vember 212 (c) 212 National Grid M-25

234 Commercial Gas Efficiency s Multiple - Custom s Version Date: PY 213 Description The Custom project track is offered for energy efficiency projects involving complex sitespecific applications that require detailed engineering analysis and/or projects which do not qualify for incentives under any of the prescriptive rebate offering. Projects offered through the custom approach must pass a cost-effectiveness test based on project-specific costs and savings. Baseline Efficiency For Lost Opportunity projects, the baseline efficiency case assumes compliance with the efficiency requirements as mandated by Rhode Island State Building Code or industry accepted standard practice. For retrofit projects, the baseline efficiency case is the same as the existing, or pre-retrofit, case for the facility. High Efficiency The high efficiency case is specific to the custom project and may include one or more energy efficiency measures. Energy savings calculations are based on projected changes in equipment efficiencies and operating characteristics and are determined on a case-by-case basis. The project must be proven cost-effective in order to qualify for energy efficiency incentives. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: Multiple Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Custom Unit = Installed custom efficiency application. vember 212 (c) 212 National Grid M-26

235 Commercial Gas Efficiency s Hours All hours for custom savings analyses should be determined on a case-by-case basis. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Custom Retrofit Commercial Retrofit Calc Custom New Construction Commercial New Construction Calc Calc Calc Calc Calc Calc Calc n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Custom Retrofit Commercial Retrofit mult (72) Custom New Construction Commercial New mult Construction (72) Sources 72 KEMA (211). Impact Evaluation of C&I Custom Gas Installations. Prepared for National Grid. vember 212 (c) 212 National Grid M-27

236 Characterizations C&I Electric Efficiency s vember National Grid

237 Commercial Electric Efficiency s Compressed Air - Zero Loss Condensate Drains Version Date: PY 213 Description Drains remove water from a compressed air system. Zero loss condensate drains remove water from a compressed air system without venting any air, resulting in less air demand and consequently greater efficiency. Baseline Efficiency The baseline efficiency case is installation of a standard condensate drain on a compressor system. High Efficiency The high efficiency case is installation of a zero loss condensate drain on a single operating compressor rated 75 HP. Sector: C&I End Use: Compressed Air Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed drain. vember 212 (c) 212 National Grid M-28

238 Commercial Electric Efficiency s Hours The annual hours of operation are site specific and determined on a case by case basis. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Zero loss condensate drain Commercial New Construction Calc.244. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Zero loss condensate drain Commercial New Construction (19) (26) (26) Sources 26 USA Technologies Energy Management Product Sheets (26). Accessed on 9/1/29. vember 212 (c) 212 National Grid M-29

239 Commercial Electric Efficiency s Compressed Air - High Efficiency Air Compressors Version Date: PY 213 Description Covers the installation of oil flooded, rotary screw compressors with Load/ Load, Variable Speed Drive, or Variable Displacement capacity control with properly sized air receiver. Efficient air compressors use various control schemes to improve compression efficiencies at partial loads. When an air compressor fitted with Load/ Load, Variable Speed Drive, or Variable Displacement capacity controls is used in conjunction with a properly-sized air receiver, considerable amounts of energy can be saved. Baseline Efficiency The baseline efficiency case is a typical modulating compressor with blow down valve. High Efficiency The high efficiency case is an oil-flooded, rotary screw compressor with Load/ Load, Variable Speed Drive, or Variable Displacement capacity control with a properly sized air receiver. Air receivers are designed to provide a supply buffer to meet short-term demand spikes which can exceed the compressor capacity. Installing a larger receiver tank to meet occasional peak demands can allow for the use of a smaller compressor. Sector: C&I End Use: Compressed Air Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Total horsepower (hp) of installed air compressor capacity. vember 212 (c) 212 National Grid M-21

240 Commercial Electric Efficiency s Hours The annual hours of operation are site specific and determined on a case by case basis. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane VSD (25 HP 75) VSD (15 HP<25) Variable Displacement (5 HP 75) Load/ Load (25 HP 75) Load/ Load (15 HP<25) Commercial New Construction Commercial New Construction Commercial New Construction Commercial New Construction Commercial New Construction Calc Calc Calc Calc Calc n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp VSD (25 HP 75) Commercial New Construction (19) (26) (26) VSD (15 HP<25) Commercial New Construction (19) (26) (26) Variable Displacement Commercial New (5 HP 75) Construction (19) (26) (26) Load/ Load (25 HP 75) Commercial New Construction (19) (26) (26) Load/ Load (15 HP<25) Commercial New Construction (19) (26) (26) Sources vember 212 (c) 212 National Grid M-211

241 Commercial Electric Efficiency s 26 USA Technologies Energy Management Product Sheets (26). Accessed on 9/1/29. vember 212 (c) 212 National Grid M-212

242 Commercial Electric Efficiency s Compressed Air - Low Pressure Drop Filters Version Date: PY 213 Description Filters remove solids and aerosols from compressed air systems. Low pressure drop filters have longer lives and lower pressure drops than traditional coalescing filters resulting in higher efficiencies. Baseline Efficiency The baseline efficiency case is a standard coalescing filter with initial drop of between 1 and 2 pounds per sq inch (psi) with an end of life drop of 1 psi. High Efficiency The high efficiency case is a low pressure drop filter with initial drop not exceeding 1 psi over life and 3 psi at element change. Filters must be deep-bed, mist eliminator style and installed on a single operating compressor rated HP. Sector: C&I End Use: Compressed Air Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed filter. vember 212 (c) 212 National Grid M-213

243 Commercial Electric Efficiency s Hours The annual hours of operation are site specific and determined on a case by case basis. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Low pressure drop filter Commercial New Construction Calc Calc. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Low pressure drop filter Commercial New Construction (26) (26) Sources 26 USA Technologies Energy Management Product Sheets (26). Accessed on 9/1/29. vember 212 (c) 212 National Grid M-214

244 Commercial Electric Efficiency s Compressed Air - Refrigerated Air Dryers Version Date: PY 213 Description The installation of cycling or variable frequency drive (VFD)-equipped refrigerated compressed air dryers. Refrigerated air dryers remove the moisture from a compressed air system to enhance overall system performance. An efficient refrigerated dryer cycles on and off or uses a variable speed drive as required by the demand for compressed air instead of running continuously. Only properly sized refrigerated air dryers used in a single-compressor system are eligible. Baseline Efficiency The baseline efficiency case is a non-cycling refrigerated air dryer. High Efficiency The high efficiency case is a cycling refrigerated dryer or a refrigerated dryer equipped with a VFD. Sector: C&I End Use: Compressed Air Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Total CFM of installed air dryer capacity. vember 212 (c) 212 National Grid M-215

245 Commercial Electric Efficiency s Hours The annual hours of operation are site specific and determined on a case by case basis. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Dryer (CFM<1) Dryer (CFM 4) Dryer (3 CFM<4) Dryer (2 CFM<3) Dryer (1 CFM<2) Commercial New Construction Commercial New Construction Commercial New Construction Commercial New Construction Commercial New Construction Calc Calc Calc Calc Calc n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Dryer (CFM<1) Commercial New Construction (19) (26) (26) Dryer (CFM 4) Commercial New Construction (19) (26) (26) Dryer (3 CFM<4) Commercial New Construction (19) (26) (26) Dryer (2 CFM<3) Commercial New Construction (19) (26) (26) Dryer (1 CFM<2) Commercial New Construction (19) (26) (26) Sources 26 USA Technologies Energy Management Product Sheets (26). Accessed on 9/1/29. vember 212 (c) 212 National Grid M-216

246 Commercial Electric Efficiency s Food Service - Commercial Electric Steamer Version Date: PY 213 Description Installation of a qualified ENERGY STAR commercial steam cooker. ENERGY STAR steam cookers save energy during cooling and idle times due to improved cooking efficiency and idle energy rates. Baseline Efficiency The baseline efficiency case is a conventional electric steam cooker with a cooking energy efficiency of 3%, pan production capacity of 23.3 pounds per hour, and an idle energy rate of 1.2 kw. High Efficiency The high efficiency case is an ENERGY STAR electric steam cooker with a cooking energy efficiency of 5%, pan production capacity of 16.7 pounds per hour, and an idle energy rate of.4 kw. Sector: C&I End Use: Food Service Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency commercial electric steamer. vember 212 (c) 212 National Grid M-217

247 Commercial Electric Efficiency s Hours The average steam cooker is assumed to operate 4,38 hours per year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Commercial electric steamer Commercial New Construction 9,774 (65) 2.23 (65). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial electric steamer Commercial New Construction (65) Sources 65 Environmental Protection Agency (211). Savings Calculator for ENERGY STAR Qualified Commercial Kitchen Equipment: Steam Cooker Calcs. Accessed on 1/12/211. vember 212 (c) 212 National Grid M-218

248 Commercial Electric Efficiency s Food Service - Commercial Electric Ovens Version Date: PY 213 Description Installation of a qualified ENERGY STAR commercial oven. ENERGY STAR commercial ovens save energy during preheat, cooking and idle times due to improved cooking efficiency, and preheat and idle energy rates. Baseline Efficiency The baseline efficiency case is a standard oven that meets the baseline cooking energy efficiency requirements. High Efficiency The high efficiency case is an oven that meets or exceeds the minimum high efficiency ratings. Sector: C&I End Use: Food Service Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency commercial electric oven. vember 212 (c) 212 National Grid M-219

249 Commercial Electric Efficiency s Hours The average commercial oven is assumed to operate 4,38 hours per year Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Commercial electric oven Commercial New Construction 2,262 (28).52 (28). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial electric oven Commercial New Construction (28) Sources 28 Pacific Gas & Electric Company Customer Energy Efficiency Department (27). Work Paper PGECOFST11, Commercial Convection Oven, Revision #. vember 212 (c) 212 National Grid M-22

250 Commercial Electric Efficiency s Food Service - Commercial Electric Griddle Version Date: PY 213 Description Installation of a qualified ENERGY STAR griddle. ENERGY STAR griddles save energy during preheat, cooking and idle times due to improved cooking efficiency, and preheat and idle energy rates. Baseline Efficiency The baseline efficiency case is a standard efficiency (3% efficient) gas griddle. High Efficiency The high efficiency case is a gas griddle with an efficiency of 38%. Sector: C&I End Use: Food Service Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed high-efficiency commercial electric griddle. vember 212 (c) 212 National Grid M-221

251 Commercial Electric Efficiency s Hours The average griddle is assumed to operate 4,38 hours per year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Commercial electric griddle Commercial New Construction 2,537 (66).58 (66). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial electric griddle Commercial New Construction (66) Sources 66 Food Service Technology Center (211). Electric Griddle Life-Cycle Cost Calculator. Accessed on 1/12/211. vember 212 (c) 212 National Grid M-222

252 Commercial Electric Efficiency s HVAC - Demand Control Ventilation Version Date: PY 213 Description The measure is to control quantity of outside air to an air handling system based on detected space CO2 levels. The installed systems monitor the CO2 in the spaces or return air and reduce the outside air use when possible to save energy while meeting indoor air quality standards. Baseline Efficiency The baseline efficiency case for this measure assumes the relevant HVAC equipment has no ventilation control. High Efficiency The high efficiency case is the installation of an outside air intake control based on CO2 sensors. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Custom Unit = Installed demand control ventilation project. vember 212 (c) 212 National Grid M-223

253 Commercial Electric Efficiency s Hours The annual hours of operation are site specific and determined on a case by case basis. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Demand control ventilation Commercial New Construction Calc Calc Calc Calc n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Demand control ventilation Commercial New Construction (19) Sources vember 212 (c) 212 National Grid M-224

254 Commercial Electric Efficiency s HVAC - Energy Management Systems Version Date: PY 213 Description The measure is the installation of a new building energy management system (EMS) or the expansion of an existing energy management system for control of non-lighting electric and gas end-uses in an existing building on existing equipment. Baseline Efficiency The baseline case is the existing equipment and systems without the implemented controls. High Efficiency The high efficiency case is the installation of a new EMS or the expansion of an existing EMS to control additional non-lighting electric and/or gas equipment. The EMS must be installed in an existing building on existing equipment. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Custom Unit = Upgrade to existing energy management system. vember 212 (c) 212 National Grid M-225

255 Commercial Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Energy management system Commercial Retrofit Calc Calc Calc Calc n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Energy management system Commercial Retrofit (19) (3) (3) (3) Sources 3 The Fleming Group (1994). Persistence of Commercial/Industrial n-lighting s, Volume 3, Energy Management Control Systems. Prepared for New England Power Service Company. vember 212 (c) 212 National Grid M-226

256 Commercial Electric Efficiency s HVAC - Dual Enthalpy Economizer Controls Version Date: PY 213 Description The measure is to upgrade the outside-air dry-bulb economizer to a dual enthalpy economizer. The system will continuously monitor the enthalpy of both the outside air and return air. The system will control the system dampers adjust the outside quantity based on the two readings. Baseline Efficiency The baseline efficiency case for this measure assumes the relevant HVAC equipment is operating with a fixed dry-bulb economizer. High Efficiency The high efficiency case is the installation of an outside air economizer utilizing two enthalpy sensors, one for outdoor air and one for return air. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Total tons of controlled cooling capacity. vember 212 (c) 212 National Grid M-227

257 Commercial Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Dual enthalpy economizer controls Commercial New Construction 289 (8).289 (8). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Dual enthalpy economizer controls Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial New Construction (19) (71) (71) Sources 71 KEMA (211). C&I Unitary HVAC Load Shape Project Final Report. Prepared for the NEEP Regional Evaluation, ment and Verification Forum. 8 Patel, Dinesh (21). Energy Analysis: Dual Enthalpy Control. Prepared for NSTAR. vember 212 (c) 212 National Grid M-228

258 Commercial Electric Efficiency s HVAC - ECM Fan Motors for HVAC Version Date: PY 213 Description This measure is offered through the Cool Choice program and promotes the installation of electronically commutated motors (ECMs) on fan powered terminal boxes, fan coils, and HVAC supply fans on small unitary equipment. Baseline Efficiency The baseline efficiency case for this measure assumes the VAV box fans are powered by a single speed fractional horsepower permanent split capacitor (PSC) induction motor. High Efficiency The high efficiency case must have a motor installed on new, qualifying HVAC equipment. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed ECM fan motor. vember 212 (c) 212 National Grid M-229

259 Commercial Electric Efficiency s Hours The annual operating hours for ECMs on VAV box fans are determined by project vendors based on sitespecific data. Reference Tables Table 1: Savings Factors for ECM HVAC Fan Motors in Appendix A: Common Lookup Tables. Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane ECM fan motor for HVAC Commercial New Construction Calc Calc. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp ECM fan motor for HVAC Commercial New Construction (19) Sources vember 212 (c) 212 National Grid M-23

260 Commercial Electric Efficiency s HVAC - Chillers Version Date: PY 213 Description This measure promotes the installation of efficient water-cooled and air-cooled water chilling packages for comfort cooling applications. Eligible chillers include air-cooled, water cooled rotary screw and scroll, and water cooled centrifugal chillers for single chiller systems or for the lead chiller only in multi-chiller systems. Baseline Efficiency The baseline efficiency case assumes compliance with the efficiency requirements as mandated by Rhode Island State Building Code. As described in Chapter 13 of the aforementioned document, energyefficiency must be met via compliance with the International Energy Conservation Code (IECC) 29. Tab 8 details the specific efficiency requirements by equipment type and capacity. High Efficiency The high efficiency case assumes water chilling packages that exceed the efficiency levels required by Rhode Island State Building Code and meet the minimum efficiency requirements as stated in the New Construction HVAC energy efficiency rebate forms. Energy and demand savings calculations are base on actual equipment efficiencies should be determined on a caseby-case basis. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed high-efficiency chiller for space cooling. vember 212 (c) 212 National Grid M-231

261 Commercial Electric Efficiency s Hours Estimated annual cooling hours are shown in Table 9: Cooling Hours for Chillers in Appendix C: Common Lookup Tables. Reference Tables Table 8: Baseline Efficiency Requirements for C&I Chillers and Table 9: Cooling Hours for C&I Chillers in Appendix A: Common Lookup Tables. Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Water-cooled chiller Air-cooled chiller Commercial New Construction Commercial New Construction Calc Calc Calc Calc.. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Water-cooled chiller Commercial New Construction (27) Air-cooled chiller Commercial New Construction (27) Sources vember 212 (c) 212 National Grid M-232

262 Commercial Electric Efficiency s HVAC - CHP Version Date: PY 213 Description Combined heat and power retrofit projects. Baseline Efficiency The baseline efficiency case is the existing facility and equipment. High Efficiency The high efficiency case is an installed combined heat and power (CHP) system. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Custom Unit = combined heat and power project vember 212 (c) 212 National Grid M-233

263 Commercial Electric Efficiency s Hours Site-specific Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane CHP Commercial Retrofit Calc Calc Calc n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp CHP Commercial Retrofit mult (19) Sources vember 212 (c) 212 National Grid M-234

264 Commercial Electric Efficiency s HVAC - Heat Pump Systems Version Date: PY 213 Description This measure applies to the installation of high-efficiency single package or split system air source, water source, ground source (closed loop) and groundwater source (open loop) heat pump systems for space conditioning applications. Baseline Efficiency The baseline efficiency case for new installations assumes compliance with the efficiency requirements as mandated by Rhode Island State Building Code. As described in Chapter 13 of the aforementioneddocument, energy efficiency must be met via compliance with the International Energy Conservation Code (IECC) 29 with Rhode Island amendments. Table 7 details the specific efficiency requirementsby equipment type and capacity. The baseline efficiency case for replacement units are not required to meet the IECC 29. Instead, replacement installations use the ASHRAE 24 standards as baseline.the rating conditions for the baseline and efficient equipment efficiencies must be equivalent. High Efficiency The high efficiency case assumes the HVAC equipments meets or exceeds the Consortium for Energy Efficiency s (CEE) specification. This specification results in cost-effective energy savings by specifying higher efficiency HVAC equipment while ensuring that several manufacturers produce compliant equipment. The CEE specification is reviewed and updated annually to reflect changes to the ASHRAE and IECC energy code baseline as well as improvements in the HVAC equipment technology. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed heat pump system for space cooling. vember 212 (c) 212 National Grid M-235

265 Commercial Electric Efficiency s Hours The average cooling EFLHs are taken as 855 hours while the average heating EFLHs are taken as 1137 hours. (Heating EFLHs calculated using cooling EFLHs and facility type heating and cooling EFLHs given in CT PSD.) Reference Tables Table 7: Baseline Efficiency Requirements for C&I Heat Pumps in Appendix A: Common Lookup Tables. Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Water source heat pump Groundwater source (open loop) heat pump Ground source (closed loop) heat pump Air-cooled heat pump Commercial New Construction Commercial New Construction Commercial New Construction Commercial New Construction Calc Calc Calc Calc Calc Calc Calc Calc.... n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Water source heat pump Commercial New Construction (19) (2) (71) (71) Groundwater source (open Commercial New loop) heat pump Construction (19) (2) (71) (71) Ground source (closed loop) Commercial New heat pump Construction (19) (2) (71) (71) Air-cooled heat pump Commercial New Construction (19) (2) (71) (71) vember 212 (c) 212 National Grid M-236

266 Commercial Electric Efficiency s Sources 2 The Fleming Group (1994). Persistence of Commercial/Industrial n-lighting s, Volume 2, Energy Efficient HVAC and Process Cooling Equipment. Prepared for New England Power Service Company. 71 KEMA (211). C&I Unitary HVAC Load Shape Project Final Report. Prepared for the NEEP Regional Evaluation, ment and Verification Forum. vember 212 (c) 212 National Grid M-237

267 Commercial Electric Efficiency s HVAC - Hotel Occupancy Sensors Version Date: PY 213 Description The measure is to the installation of hotel occupancy sensors (HOS) to control packaged terminal AC units (PTACs) with electric heat, heat pump units and/or fan coil units in hotels that operate all 12 months of the year. Baseline Efficiency The baseline efficiency case assumes the equipment has no occupancy based controls. High Efficiency The high efficiency case is the installation of controls that include (a) occupancy sensors, (b) window/door switches for rooms that have operable window or patio doors, and (c) set back to 65 F in the heating mode and set forward to 78 F in the cooling mode when occupancy detector is in the unoccupied mode. Sensors controlled by a front desk system are not eligible. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed hotel occupancy sensor. vember 212 (c) 212 National Grid M-238

268 Commercial Electric Efficiency s Hours Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Hotel occupancy sensor Commercial Retrofit 438 (6).9 (6). n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Hotel occupancy sensor Commercial Retrofit (19) Sources 6 National Grid and NSTAR (21). Energy Analysis: Hotel Guest Occupancy Sensors. vember 212 (c) 212 National Grid M-239

269 Commercial Electric Efficiency s HVAC - Unitary Air Conditioners Version Date: PY 213 Description This measure promotes the installation of high efficiency unitary air conditioning equipment in lost opportunity applications. Air conditioning (AC) systems are a major consumer of electricity and systems that exceed baseline efficiencies can save considerable amounts of energy. This measure applies to air, water, and evaporatively-cooled unitary AC systems, both single-package and split systems. Baseline Efficiency The baseline efficiency case for new installations assumes compliance with the International Energy Conservation Code (IECC) 29 as mandated by Rhode Island State Building Code. Replacementinstallations, which are not required to meet the IECC 29 code, use the ASHREA 24 baseline efficiencies. Table 6 details the specific efficiency requirements by equipment type and capacity. High Efficiency The high efficiency case assumes the HVAC equipments meets or exceeds the Consortium for Energy Efficiency s (CEE) specification. This specification results in cost-effective energy savings by specifying higher efficiency HVAC equipment while ensuring that several manufacturers produce compliant equipment. The CEE specification is reviewed and updated annually to reflect changes to the ASHRAE and IECC energy code baseline as well as improvements in the HVAC equipment technology. The minimum efficiency requirements for program participation are outlined on the Cool Choice rebate forms. Equipment efficiency is the rated efficiency of the installed equipment for each project. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: HVAC Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed unitary AC system for space cooling. vember 212 (c) 212 National Grid M-24

270 Commercial Electric Efficiency s Hours The average equivalent full load cooling hours for C&I Unitary AC equipment is 855 hours. Reference Tables Table 6: Baseline Efficiency Requirements for C&I Unitary Air Conditioners in Appendix A: Common Lookup Tables. Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Unitary AC (evaporativelycooled) Unitary AC (air-cooled) Commercial New Construction Commercial New Construction Calc Calc Calc Calc.. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Unitary AC (evaporativelycooled) Commercial New Construction (19) (71) (71) Unitary AC (air-cooled) Commercial New Construction (19) (71) (71) Sources 71 KEMA (211). C&I Unitary HVAC Load Shape Project Final Report. Prepared for the NEEP Regional Evaluation, ment and Verification Forum. vember 212 (c) 212 National Grid M-241

271 Commercial Electric Efficiency s Lighting - Lighting Systems Version Date: PY 213 Description This measure promotes the installation of efficient lighting including, but not limited to, efficient fluorescent lamps, ballasts, and fixtures, solid state lighting, and efficient high intensity discharge (HID) lamps, ballasts, and fixtures. Baseline Efficiency For retrofit installations, the baseline efficiency case is project-specific and is determined using actualfixture types and counts from the existing space. Existing fixture wattages are provided in the 212 Rhode Island Device Codes and Rated Lighting System Wattage Table for retrofit projects. For lostopportunity installations, the baseline efficiency case is determined using assumed baseline wattages foreach of the installed fixtures. High Efficiency For both new construction and retrofit installations, the high efficiency case is project-specific and isdetermined using actual fixture counts for the project and the 212 Rhode Island Device Codes and RatedLighting System Wattage Tables for new construction and retrofit projects. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: Lighting Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed lighting controls project. vember 212 (c) 212 National Grid M-242

272 Commercial Electric Efficiency s Hours The annual hours of operation are site-specific and determined on a case-by-case basis. Table 2 in Appendix A provides typical lighting hours by building type and should be used as guidance when site-specific hours are unknown. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Screw-in CFL Direct Install Calc Lighting systems Direct Install Calc Lighting systems Commercial Retrofit Calc Lighting systems LED exit signs Commercial New Construction Commercial New Construction Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Screw-in CFL Direct Install (99) (6) (39) (15) (15) (7) (7) Lighting systems Direct Install (99) (39) (15) (15) (7) (7) Lighting systems Commercial Retrofit (99) (38) (14) (14) (7) (7) Lighting systems Commercial New Construction (19) (5) (5) (5) (5) (5) LED exit signs Commercial New Construction (19) Sources vember 212 (c) 212 National Grid M-243

273 Commercial Electric Efficiency s 14 RLW Analytics (24). 23 Energy Initiative "EI" Lighting Impact Evaluation Final Report. Prepared for National Grid. 15 RLW Analytics (24). Massachusetts Utilities 23 Multiple Small Business Lighting Retrofit Programs Impact Evaluation. Prepared for Massachusetts Utilities. 38 Summit Blue Consulting (28). Large Commercial and Industrial Retrofit Program Impact Evaluation 27. Prepared for National Grid. 39 Summit Blue Consulting (28). Multiple Small Business Services Programs Impact Evaluation 27. Prepared for Massachusetts Joint Utilities. 5 KEMA (29). Design 2plus Lighting Hours of Use and Load Shape ment Study. Prepared for National Grid. 6 HEC, Inc. (1996). Final Report for New England Power Service Company Persistence of Savings Study. Prepared for NEPSCo. 7 KEMA (211). C&I Lighting Load Shape Project FINAL Report. Prepared for the NEEP Regional Evaluation, ment and Verification Forum. vember 212 (c) 212 National Grid M-244

274 Commercial Electric Efficiency s Lighting - Freezer/Cooler LEDs Version Date: PY 213 Description Installation of LED lighting in freezer and/or cooler cases. The LED lighting consumes less energy, and results in less waste heat which reduces the cooling/freezing load. Baseline Efficiency The baseline efficiency case is the existing lighting fixtures in the cooler or freezer cases. High Efficiency The high efficiency case is the installation of LED lighting fixtures on the cooler or freezer cases, replacing the existing lighting fixtures. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: Lighting Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = lighting project vember 212 (c) 212 National Grid M-245

275 Commercial Electric Efficiency s Hours Annual hours of operation are determined on a case-by-case basis and are typically 8,76 hours/year (based on experience of National Grid program staff and implementation vendors). Post-retrofit operating hours are assumed to be the same as pre-retrofit hours unless lighting occupancy sensors were also implemented. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane LEDs for freezer/cooler cases Direct Install Calc LEDs for freezer/cooler cases Commercial Retrofit Calc Calc Calc.. n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp LEDs for freezer/cooler cases Direct Install (19) (31) LEDs for freezer/cooler cases Commercial Retrofit (19) Sources 31 RLW Analytics (27). Small Business Services Custom Impact Evaluation. Prepared for National Grid. vember 212 (c) 212 National Grid M-246

276 Commercial Electric Efficiency s Lighting - Lighting Controls Version Date: PY 213 Description This measure promotes the installation of lighting controls in both lost-opportunity and retrofit applications. Promoted technologies include occupancy sensors and daylight dimming controls. Baseline Efficiency The baseline efficiency case assumes no controls (retrofit) or code-compliant controls (new construction). High Efficiency The high efficiency case involves lighting fixtures connected to controls that reduce the preretrofit or baseline hours of operation. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: Lighting Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed lighting fixture project. vember 212 (c) 212 National Grid M-247

277 Commercial Electric Efficiency s Hours The annual hours of reduction are site-specific and are determined on a case-by-case basis. Table 2 in Appendix A provides typical lighting hours by building type and should be used as guidance when site-specific hours are unknown. Reference Tables Table 2: Suggested C&I Lighting Hours by Building Type in Appendix A: Common Lookup Tables. Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Occupancy sensors Direct Install Calc Occupancy sensors Commercial Retrofit Calc Occupancy sensors Daylight dimming Commercial New Construction Commercial New Construction Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc Calc n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Occupancy sensors Direct Install (99) (3) (3) (3) (3) (3) Occupancy sensors Commercial Retrofit (99) (3) (3) (3) (3) (3) Occupancy sensors Commercial New Construction (19) (3) (3) (3) (3) (3) Daylight dimming Commercial New Construction (19) (3) (3) (3) (3) (3) Sources 3 RLW Analytics (27). Lighting Controls Impact Evaluation Final Report, 25 Energy Initiative, Design 2plus and Small Business Services Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-248

278 Commercial Electric Efficiency s Lighting - Performance Lighting Version Date: PY 213 Description Advanced lighting design refers to the implementation of various lighting design principles aimed at creating a quality and appropriate lighting experience while reducingunnecessary light usage. This is often done by a professional in a new construction situation. Advanced lighting design uses techniques like maximizing task lighting and efficient fixtures to create a system of optimal energy efficiency and functionality. Baseline Efficiency The baseline efficiency assumes compliance with lighting power density requirements as mandated by Rhode Island State Building Code. Energy efficiency must be met via compliance with the InternationalEnergy Conservation Code (IECC) 29. IECC offers one compliance path, the Building Area Method. ASHRAE offers two compliance paths. For completeness, the lighting power densityrequirements for both the Building Area Method and the Space-by-Space Method are presented. Details of the specific power requirements by compliance path are provided in Tables 3-5 inappendix A: Common Lookup Tables. High Efficiency The high efficiency case assumes lighting systems that achieve lighting power densities below thoserequired by Rhode Island State Building Code. Installed lighting wattage should be determined on a caseby-case basis using the installed fixture counts and wattages. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: Lighting Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed lighting fixture project. vember 212 (c) 212 National Grid M-249

279 Commercial Electric Efficiency s Hours The annual hours of operation for are site-specific and determined on a case-by-case basis. Table 2 in Appendix A provides typical lighting hours by building type and should be used as guidance when site-specific hours are unknown. Reference Tables Tables 2-5 regarding C&I lighting hours and typical baseline lighting power densities in Appendix A: Common Lookup Tables. Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Performance lighting Commercial New Construction Calc Calc Calc Calc n-energy Impacts See Appendix C: n-energy Impacts. Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Performance lighting Commercial New Construction (19) (52) (51) (51) Sources 51 KEMA (29). National Grid USA 28 Custom Lighting Impact Evaluation, Final Report. Prepared for National Grid. Results analyzed in KEMA (29). Sample Design and Impact Evaluation Analysis of the 28 Custom Program. Prepared for National Grid. 52 KEMA (29). Sample Design and Impact Evaluation Analysis of the 28 Custom Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-25

280 Commercial Electric Efficiency s Motors/Drives - Variable Speed Drives Version Date: PY 213 Description This measure covers the installation of variable speed drives according to the terms and conditions stated on the statewide worksheet. The measure covers multiple end use types and building types. The installation of this measure saves energy since the power required to rotate a pump or fan at lower speeds requires less power than when rotated at full speed. Baseline Efficiency The baseline efficiency case for this measure varies with the equipment type. All baselines assume either a constant speed motor or 2-speed motor. In the baselines, air or water volume/temperature is controlled using valves, dampers, and/or reheats. High Efficiency In the high efficiency case, pump flow or fan air volume is directly controlled using downstream information. The pump or fan will automatically adjust its speed based on inputted set points and the downstream feedback it receives. Sector: C&I End Use: Motors/Drives Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed variable speed drive on exisitng motor or with new NEMA premium efficiency motor. vember 212 (c) 212 National Grid M-251

281 Commercial Electric Efficiency s Hours Hours vary by end use and building type. Reference Tables Table 12: Savings Factors for C&I VFDs (kwh/hp and kw/hp) in Appendix A: Common Lookup Tables. Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Variable speed drives Commercial Retrofit Calc Variable speed drives w/motor Variable speed drives Variable speed drives w/motor Commercial Retrofit Commercial New Construction Commercial New Construction Calc Calc Calc Calc Calc Calc Calc.... n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Variable speed drives Commercial Retrofit (19) Variable speed drives Commercial Retrofit w/motor (19) Variable speed drives Commercial New Construction (19) Variable speed drives Commercial New w/motor Construction (19) Sources vember 212 (c) 212 National Grid M-252

282 Commercial Electric Efficiency s Multiple - Custom s Version Date: PY 213 Description The Custom project track is offered for energy efficiency projects involving complex sitespecific applications that require detailed engineering analysis and/or projects which do not qualify for incentives under any of the prescriptive rebate offering. Projects offered through the custom approach must pass a cost-effectiveness test based on project-specific costs and savings. Baseline Efficiency For Lost Opportunity projects, the baseline efficiency case assumes compliance with the efficiency requirements as mandated by Rhode Island State Building Code or industry accepted standard practice. For retrofit projects, the baseline efficiency case is the same as the existing, or pre-retrofit, case for the facility. High Efficiency The high efficiency case is specific to the custom project and may include one or more energy efficiency measures. Energy and demand savings calculations are based on projected or measured changes in equipment efficiencies and operating characteristics and are determined on a case-by-case basis. The project must be proven cost-effective in order to qualify for energy efficiency incentives. Electric Energy Impact: Sector: C&I Gas Energy Impact: End Use: Multiple Oil Energy Impact: Market (Lost Opportunity Market (Retrofit) Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Custom Unit = Installed custom energy-efficiency project. vember 212 (c) 212 National Grid M-253

283 Commercial Electric Efficiency s Hours The annual hours of operation are site specific and determined on a case by case basis. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Custom refrigeration Direct Install Calc Calc Calc Calc Custom other Direct Install Calc Calc Calc Calc Custom lighting Direct Install Calc Calc Calc Calc Custom verified performance Commercial Retrofit Calc Calc Calc Calc Custom process Commercial Retrofit Calc Calc Calc Calc Custom lighting Commercial Retrofit Calc Calc Calc Calc Custom HVAC Commercial Retrofit Calc Calc Calc Calc Comprehensive Retrofit (CR) Commercial Retrofit Calc Calc Calc Calc Custom process Commercial New Construction Calc Calc Calc Calc Custom lighting Commercial New Construction Calc Calc Calc Calc Custom HVAC Commercial New Construction Calc Calc Calc Calc Comprehensive Design (CDA) Commercial New Construction Calc Calc Calc Calc n-energy Impacts vember 212 (c) 212 National Grid M-254

284 Commercial Electric Efficiency s Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Custom refrigeration Direct Install mult (19) (31) (31) (31) Custom other Direct Install mult (19) (31) (31) (31) Custom lighting Direct Install mult (19) (31) (31) (31) Custom verified performance Commercial Retrofit mult (19) Custom process Commercial Retrofit mult (19) (58) (58) (58) Custom lighting Commercial Retrofit mult (19) (58) (58) (58) Custom HVAC Commercial Retrofit mult (19) (73) (73) (73) Comprehensive Retrofit (CR) Commercial Retrofit mult (19) (73) (73) (73) Custom process Commercial New mult Construction (19) (58) (58) (58) Custom lighting Commercial New mult Construction (19) (58) (58) (58) Custom HVAC Commercial New mult Construction (19) (73) (73) (73) Comprehensive Design (CDA) Sources Commercial New Construction mult (19) (73) (73) (73) 31 RLW Analytics (27). Small Business Services Custom Impact Evaluation. Prepared for National Grid. 58 KEMA (21). Sample Design and Impact Evaluation Analysis of the 29 Custom Program. Prepared for National Grid. 73 KEMA (211). Impact Evaluation of Custom Comprehensive and HVAC Installations. Prepared for National Grid. vember 212 (c) 212 National Grid M-255

285 Commercial Electric Efficiency s Refrigeration - Case Motor Replacement Version Date: PY 213 Description Installation of various sizes of electronically commutated motors (ECMs) in walk-in coolers and freezers to replace existing evaporator fan motors. Baseline Efficiency The baseline efficiency case is an existing evaporator fan motor. High Efficiency The high efficiency case is the replacement of existing evaporator fan motors with ECMs. Sector: C&I End Use: Refrigeration Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed electronically commutated motor for evaporator fans in existing cooler/freezer. vember 212 (c) 212 National Grid M-256

286 Commercial Electric Efficiency s Hours The annual operating hours are assumed to be 8,76 * (1-%OFF), where %OFF = if the facility does not have evaporator fan controls or %OFF > if the facility has evaporator fan controls. See section: Refrigeration Evaporator Fan Controls for %OFF value. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Case ECMs Commercial Retrofit Calc Calc. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Case ECMs Commercial Retrofit (19) (29) (29) (29) (29) (29) Sources 29 RLW Analytics (27). Impact Evaluation Analysis of the 25 Custom SBS Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-257

287 Commercial Electric Efficiency s Refrigeration - Vending Misers Version Date: PY 213 Description Controls can significantly reduce the energy consumption of vending machine lighting and refrigeration systems. Qualifying controls must power down these systems during periods of inactivity but, in the case of refrigerated machines, must always maintain a cool product that meets customer expectations. This measure applies to refrigerated beverage vending machines, non-refrigerated snack vending machines, and glass front refrigerated coolers. This measure should not be applied to ENERGY STAR qualified vending machines, as they already have built-in controls. Baseline Efficiency The baseline efficiency case is a standard efficiency refrigerated beverage vending machine, nonrefrigerated snack vending machine, or glass front refrigerated cooler without a control system capable of powering down lighting and refrigeration systems during periods of inactivity. High Efficiency The high efficiency case is a standard efficiency refrigerated beverage vending machine, nonrefrigerated snack vending machine, or glass front refrigerated cooler with a control system capable of powering down lighting and refrigeration systems during periods of inactivity. Sector: C&I End Use: Refrigeration Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Deemed Unit = Installed vending miser. vember 212 (c) 212 National Grid M-258

288 Commercial Electric Efficiency s Hours It is assumed that the connected equipment operates 24 hours per day, 7 days per week for a total annual operating hours of 8,76. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Refrigerated beverage vending machine n-refrigerated snack vending machine Glass front refrigerated coolers Refrigerated beverage vending machine n-refrigerated snack vending machine Glass front refrigerated coolers Direct Install 1,612 (26) Direct Install 343 (26) Direct Install 1,28 (26) Commercial Retrofit 1,612 (26) Commercial Retrofit 343 (26) Commercial Retrofit 1,28 (26).4 (26).85 (26).138 (26).4 (26).85 (26).138 (26) n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Refrigerated beverage vending machine n-refrigerated snack vending machine Glass front refrigerated coolers Refrigerated beverage vending machine Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Direct Install (19) Direct Install (19) Direct Install (19) Commercial Retrofit (19) vember 212 (c) 212 National Grid M-259

289 n-refrigerated snack vending machine Glass front refrigerated coolers Commercial Electric Efficiency s Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial Retrofit (19) Commercial Retrofit (19) Sources 26 USA Technologies Energy Management Product Sheets (26). Accessed on 9/1/29. vember 212 (c) 212 National Grid M-26

290 Commercial Electric Efficiency s Refrigeration - Cooler Night Covers Version Date: PY 213 Description Installation of retractable aluminum woven fabric covers for open-type refrigerated display cases, where the covers are deployed during the facility unoccupied hours in order to reduce refrigeration energy consumption. Baseline Efficiency The baseline efficiency case is the annual operation of open-display cooler cases. High Efficiency The high efficiency case is the use of night covers to protect the exposed area of display cooler cases during unoccupied hours. Sector: C&I End Use: Refrigeration Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Linear feet of installed night covers on existing cooler cases. vember 212 (c) 212 National Grid M-261

291 Commercial Electric Efficiency s Hours Hours represent the number of annual hours that the night covers are in use, and should be determined on a case-by-case basis. Reference Tables Table 11: Savings Factors for Cooler Night Covers in Appendix A: Common Lookup Tables. Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Cooler night cover Commercial Retrofit Calc Calc. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Cooler night cover Commercial Retrofit (19) Sources vember 212 (c) 212 National Grid M-262

292 Commercial Electric Efficiency s Refrigeration - Door Heater Controls Version Date: PY 213 Description Installation of controls to reduce the run time of door and frame heaters for freezers and walkin or reach-in coolers. The reduced heating results in a reduced cooling load. Baseline Efficiency The baseline efficiency case is a cooler or freezer door heater that operates 8,76 hours per year without any controls. High Efficiency The high efficiency case is a cooler or freezer door heater connected to a heater control system, which controls the door heaters by measuring the ambient humidity and temperature of the store, calculating the dewpoint, and using pulse width modulation (PWM) to control the antisweat heater based on specific algorithms for freezer and cooler doors. Door temperature is typically maintained about 5oF above the store air dewpoint temperature with the heaters operating at 8% (adjustable). Sector: C&I End Use: Refrigeration Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed door heater controls on existing cooler/freezer. vember 212 (c) 212 National Grid M-263

293 Commercial Electric Efficiency s Hours Pre-retrofit hours are 8,76 hours per year. After controls are installed, the door heaters in freezers are on for an average 4,73.4 hours/year (46% off time) and the door heaters for coolers are on for an average 2,277.6 hours/year (74% off time). The value is an estimate by NRM based on hundreds of downloads of hours of use data from Door Heater controllers. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Door heater control Commercial Retrofit Calc Calc. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Door heater control Commercial Retrofit (19) (4) (4) Sources 17 Select Energy (24). Cooler Control Impact Spreadsheet User s Manual. Prepared for NSTAR. 4 HEC, Inc. (1995). Analysis of Door Master Walk-In Cooler Anti-Sweat Door Heater Controls Installed at Ten Sites in Massachusetts. Prepared for NEPSCo. vember 212 (c) 212 National Grid M-264

294 Commercial Electric Efficiency s Refrigeration - ECM Evaporator Fan Motors for Walk-in Coole Version Date: PY 213 Description Installation of electronically commutated motors (ECMs) in multi-deck and freestanding coolers and freezers, typically on the retail floor of convenience stores, liquor stores, and grocery stores. Baseline Efficiency The baseline efficiency case is the existing case motor. High Efficiency The high efficiency case is the replacement of the existing case motor with an ECM. Sector: C&I End Use: Refrigeration Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed electronically commutated motor for evaporator fans in existing cooler/freezer. vember 212 (c) 212 National Grid M-265

295 Commercial Electric Efficiency s Hours Hours are the annual operating hours of the case motors. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane ECM evaporator fan motors (walk in coolers/ freezers) Commercial Retrofit Calc Calc. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) ECM evaporator fan motors (walk in coolers/ freezers) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Commercial Retrofit (19) (29) (29) (29) (29) (29) Sources 29 RLW Analytics (27). Impact Evaluation Analysis of the 25 Custom SBS Program. Prepared for National Grid. vember 212 (c) 212 National Grid M-266

296 Commercial Electric Efficiency s Refrigeration - Electronic Defrost Controls Version Date: PY 213 Description A control mechanism to skip defrost cycles when defrost is unnecessary. Baseline Efficiency The baseline efficiency case is an evaporator fan electric defrost system that uses a time clock mechanism to initiate defrost. High Efficiency The high efficiency case is an evaporator fan defrost system with electric defrost controls. Sector: C&I End Use: Refrigeration Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed defrost controls in existing cooler/freezer. vember 212 (c) 212 National Grid M-267

297 Commercial Electric Efficiency s Hours The number of defrost cycles is estimated to decrease by 35% from an average number of defrost cycles of 146 defrosts/year at 4 minutes each for a total of 973 hours/year. The number of defrost cycles with the defrost controls is 949 cycles/year, or 633 hours/year. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Defrost control Commercial Retrofit Calc Calc. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Defrost control Commercial Retrofit (19) Sources vember 212 (c) 212 National Grid M-268

298 Commercial Electric Efficiency s Refrigeration - Evaporator Fan Controls Version Date: PY 213 Description Installation of controls to modulate the evaporator fans based on temperature control. Energy savings include: fan energy savings from reduced fan operating hours, refrigeration energy savings from reduced waste heat, and compressor energy savings resulting from the electronic temperature control. Electronic controls allow less fluctuation in temperature, thereby creating savings. Baseline Efficiency The baseline efficiency case assumes evaporator fans that run 876 annual hours with no temperature control. High Efficiency The high efficiency case is the use of an energy management system to control evaporator fan operation based on temperature. Sector: C&I End Use: Refrigeration Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed controls on evaporator fans in existing cooler/freezer. vember 212 (c) 212 National Grid M-269

299 Commercial Electric Efficiency s Hours Equivalent annual full load hours of compressor operation: 4,72 hours. The operation of the fans is estimated to be reduced by 46% from the 8,76 hours in the base case scenario. This estimate is a conservative value based on 15 years of NRM field observations and experience. Reference Tables Gross Savings per Unit (Sources) Program kwh kw Gas Oil Propane Evaporator fan control Commercial Retrofit Calc Calc. n-energy Impacts Impact Factors For Calculating Adjusted Gross Savings (Sources) Program Life ISR SPF RRe RRsp RRwp CFsp CFwp Evaporator fan control Commercial Retrofit (19) (5) (5) (5) (5) (5) Sources 5 HEC, Inc. (1996). Analysis of Savings from Walk-In Cooler Air Economizers and Evaporator Fan Controls. Prepared for NEPSCo. vember 212 (c) 212 National Grid M-27

300 Commercial Electric Efficiency s Refrigeration - velty Cooler Shutoff Version Date: PY 213 Description Installation of controls to shut off a facility s novelty coolers for non-perishable goods based on pre-programmed store hours. Energy savings occur as coolers cycle off during facility unoccupied hours. Baseline Efficiency The baseline efficiency case is the novelty coolers operating 8,76 hours per year. High Efficiency The high efficiency case is the novelty coolers operating fewer than 8,76 hours per year since they are controlled to cycle each night based on pre-programmed facility unoccupied hours. Sector: C&I End Use: Refrigeration Market (Lost Opportunity Market (Retrofit) Electric Energy Impact: Gas Energy Impact: Oil Energy Impact: Propane Impact: Water Impact: n-energy Impact: Algorithm Type Unit: Algorithm Engineering algorithm with site-specific inputs Unit = Installed controls on existing cooler/freezer. vember 212 (c) 212 National Grid M-271